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Abstract
Graphical Abstract Section
Abstract
Synth. Commun. 2007, 37, 173
TRIFLIC ACID–CATALYZED MICHAEL REACTIONS OF INDOLE AND PYRROLE COMPOUNDS WITH α,β‐UNSATURATED KETONES IN WATER
Hai‐Bo Zhang, Li Liu, Yu‐Liang Liu, Yong‐Jun Chen, Jun Wang, and Dong Wang
Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
Abstract
Synth. Commun. 2007, 37, 183
EFFICIENT GREEN PROCEDURE FOR THE SYNTHESIS OF COUMARIN DERIVATIVES BY A ONE‐POT, THREE‐COMPONENT REACTION UNDER SOLVENT‐FREE CONDITIONS
Liangce Rong,1,2 Xiaoyue Li,1 Haiying Wang,1 Daqing Shi,1,2 Shujiang Tu,1,2 and Qiya Zhuang1,2
1Department of Chemisty, Xuzhou Normal University, China
2Key Laboratory of Biotechnology for Medicinal Plant, Xuzhou, Jiangsu, China
A simple, efficient, and general method has been developed for the synthesis of coumarin derivatives through a one‐pot reaction of aromatic aldehydes, 2,2‐dimethyl‐1,3‐dioxane‐4,6‐dione and 5,5‐dimethyl‐1,3‐cyclohexanedione, in the presence of TEBA under solvent‐free conditions using grinding methods. The mild reaction conditions, simple protocol, high yields, and cleaner reaction make this protocol practical and economically attractive.
Abstract
Synth. Commun. 2007, 37, 191
PREPARATION OF A PEG‐SUPPORTED LIGAND AS HIGHLY STABLE PALLADIUM CATALYST AND ITS EFFICIENT RECYCLABILITY IN THE HECK REACTION
Hua‐Xing Zhang,1 Cheng‐Cai Luo,1 Ting Jin,1 and Xi‐Ping Luo2
1Key Laboratory for Molecular Design and Nutrition Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo, China
2Zhejiang Forestry University, Linan, China
Abstract
Synth. Commun. 2007, 37, 199
SYNTHESIS, STRUCTURE, AND BIOLOGICAL ACTIVITY OF NOVEL 1H‐1,2,4‐TRIAZOL‐1‐YL‐THIAZOLE DERIVATIVES
Shao Ling, Zhou Xin, Zhang Qing, Liu Jian‐Bing, Jin Zhong, and Fang Jian‐Xin
State Key Laboratory of Elemento‐organic Chemistry, Institute of Elemento‐organic Chemistry, Nankai University, Tianjin, China
2‐Amino‐4‐aryl‐5‐(1H‐1,2,4‐triazol‐1‐yl)thiazole derivatives were synthesized from the reaction of α‐bromo substituted acetophenone and thiourea. The structures were confirmed by elemental analysis, 1H NMR and single crystal X‐ray diffraction analysis. Biological evaluation showed that some of them possess antifungal and plant growth regulatory activities.
Abstract
Synth. Commun. 2007, 37, 209
EFFICIENT AND CONVENIENT METHOD FOR THE SYNTHESIS OF SYMMETRICAL TRIINDOLYLMETHANES CATALYZED BY IODINE
Zhan‐Hui Zhang and Jin Lin
College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, China
Indoles reacted with triethyl orthoformate in the presence of a catalytic amount of iodine at room temperature to give the corresponding symmetrical triindolylmethanes (TIMs) in good to high yields.
Abstract
Synth. Commun. 2007, 37, 217
MICROWAVE‐PROMOTED HECK REACTION USING PD(OAC)2 AS CATALYST UNDER LIGAND‐FREE AND SOLVENT‐FREE CONDITIONS
Li‐Hua Du and Yan‐Guang Wang
Department of Chemistry, Zhejiang University, Hangzhou, China
A rapid and efficient microwave‐promoted Heck reaction of aryl iodides and bromides with terminal olefins using a Pd(OAc)2 (0.05 mol%)/K3PO4 catalytic system under ligand‐free and solvent‐free conditions is described.
Abstract
Synth. Commun. 2007, 37, 223
FACILE SYNTHESIS OF TRIARYLPYRIMIDINES WITH MICROWAVE‐IRRADIATED REACTIONS OF N‐PHENACYLPYRIDINIUM CHLORIDE
Ping Wu,1,2 Xi‐Mei Cai,1 Qi‐Fang Wang,1 and Chao‐Guo Yan1
1College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, China
2Yangzhou Polytechnic College, Yangzhou, China
In a system of ammonium acetate and acetic acid under microwave irradiation, N‐phenacylpyridinium chloride reacted with 2 mol of aromatic aldehydes to give 2,4,6‐triarylpyrimidine.
Abstract
Synth. Commun. 2007, 37, 231
CONVENIENT METHOD FOR SYNTHESIS OF SUBSTITUTED 2‐AMINO‐2‐CHROMENES
Ai‐Qin Zhang,1 Ming Zhang,2 Huan‐Huan Chen,2 Jun Chen,2 and Hai‐Yan Chen2
1Department of Environmental and Chemical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang, Jiangxi, China
2College of Chemistry, Jiangxi Normal University, Nanchang, Jiangxi, China
Some substituted 2‐amino‐2‐chromenes were synthesized by the reaction of arylidenemalononitriles with 1‐naphthol or 2‐naphthol in the presence of sodium hydroxide as catalyst under solvent‐free condition.
Abstract
Synth. Commun. 2007, 37, 237
CONVENIENT SYNTHESIS OF BENZENE‐1,3,5‐TRICARBALDEHYDE AND CONGENERS
Erik Tullberg and Torbjörn Frejd
Department of Organic Chemistry, Lund University, Lund, Sweden
Abstract
Synth. Commun. 2007, 37, 247
FOUR‐COMPONENT CYCLOCONDENSATION OF AMINODIAZINES, GLYOXAL, FORMALDEHYDE, AND METHANOL TO IMIDAZOLIDINES
Mehdi Ghandi, Abolfazl Olyaei, and Farshid Salimi
School of Chemistry, University College of Science, University of Tehran, Tehran, Iran
Abstract
Synth. Commun. 2007, 37, 257
FACILE SYNTHESIS OF NITRILES FROM AROMATIC ALDEHYDES USING DMSO‐I2
Digambar D. Gaikwad,1 Sameer V. Renukdas,1 Babasaheb V. Kendre,1 Suresh U. Shisodia,2 Ravikumar M. Borade,2 Praveen S. Shinde,2 Sunil S. Chaudhary,2 and Rajendra P. Pawar2
1Department of Chemistry, Vaidyanath College, Parli‐Vaijnath, India
2Department of Chemistry, Dnyanopasak College, Parbhani, Maharashtra, India
Nitriles have been prepared from different aromatic aldehydes by a one‐pot process using hydroxylamine hydrochloride and molecular iodine in the presence of dimethylsulphoxide.
Abstract
Synth. Commun. 2007, 37, 261
EFFICIENT SYNTHESIS OF 3,5,6‐TRISUBSTITUTED‐1,2,4‐TRIAZINES IN THE BRØNSTED ACIDIC IONIC LIQUID, 1‐N‐BUTYLIMIDAZOLIUM TETRAFLUOROBORATE ([HBIM]BF4)
T. M. Potewar, R. J. Lahoti, Thomas Daniel, and K. V. Srinivasan
Division of Organic Chemistry, Technology National Chemical Laboratory, Pune, India
3,5,6‐trisubstituted‐1,2,4‐triazines were synthesized in a one‐pot reaction with acid hydrazide, 1,2‐diketone, and ammonium acetate in the Brønsted acidic ionic liquid, 1‐n‐butylimidazolium tetrafluoroborate ([Hbim]BF4).
Abstract
Synth. Commun. 2007, 37, 271
DIOXANE DIBROMIDE–MEDIATED SOLVENT‐FREE SYNTHESIS OF VICINAL DIBROMIDES
Subrata Kumar Chaudhuri, Sanchita Roy, Manabendra Saha, and Sanjay Bhar
Department of Chemistry, Organic Chemistry Section, Jadavpur University, Kolkata, India
Abstract
Synth. Commun. 2007, 37, 275
α‐BROMINATION OF 1,3‐DICARBONYL COMPOUNDS USING DESS–MARTIN PERIODINANE (DMP) AND TETRAETHYLAMMONIUM BROMIDE (TEAB)
Paresh D. Salgaonkar, Vidyanand G. Shukla, and Krishnacharya G. Akamanchi
Department of Pharmaceutical Sciences and Technology, University Institute of Chemical Technology, Matunga, Mumbai, India
Abstract
Synth. Commun. 2007, 37, 281
SIMPLE AND SELECTIVE REMOVAL OF THE T‐BUTYLOXYCARBONYL (BOC) PROTECTING GROUP ON INDOLES, PYRROLES, INDAZOLES, AND CARBOLINES
K. Ravinder, A. Vijender Reddy, K. Chinni Mahesh, M. Narasimhulu, and Y. Venkateswarlu
Natural Products Laboratory, Organic Chemistry Division I, Indian Institute of Chemical Technology, Hyderabad, India
Abstract
Synth. Commun. 2007, 37, 289
CONVENIENT AND REGIOSELECTIVE ONE‐POT SOLVENT‐ FREE SYNTHESIS OF β‐HYDROXYPHOSPHONATES
A. R. Sardarian and Z. Shahsavari‐Fard
Chemistry Department, College of Science, Shiraz University, Shiraz, Iran
A simple, efficient, and solvent‐free method has been developed for the synthesis of β‐hydroxyphosphonates (2) from epoxides (1) and triethyl phosphite using ZnCl2 in high yields under mild conditions.
Abstract
Synth. Commun. 2007, 37, 297
VERSATILE SPIROCYCLIC GLYCINE‐BASED NITRONES AND THEIR HIGHLY STEREOSELECTIVE 1,3‐DIPOLAR CYCLOADDITION
Shangli Cheng,1 Huimin Wu,2 and Xianming Hu2
1Chemistry Department, Wuppertal University, Wuppertal, Germany
2College of Pharmacy, Wuhan University, Wuhan, Hubei, China
Abstract
Synth. Commun. 2007, 37, 309
PREPARATION OF A BRIDGED VERBENINDENYL LIGAND FOR METALLOCENES
Geir Langli and Kjell Undheim
Department of Chemistry, University of Oslo, Norway
Abstract
Synth. Commun. 2007, 37, 317
EFFICIENT SYNTHESIS OF PHOSPHONO‐ AND PHOSPHINOXIDOMETHYLATED N‐HETEROCYCLES UNDER SOLVENT‐FREE MICROWAVE CONDITIONS
I. Prauda,1 I. Greiner,2 K. Ludányi,3,4 and G. Keglevich1
1Department of Organic Chemical Technology, Budapest University of Technology and Economics, Budapest, Hungary
2Gedeon Richter Ltd., Budapest, Hungary
3Hungarian Academy of Sciences, Chemical Research Center, Budapest, Hungary
4Semmelweis University Faculty of Pharmacy, Department of Pharmaceutics, Budapest, Hungary
The title compounds are prepared by microwave irradiation of the solvent‐free ternary system comprising a N‐heterocycle, paraformaldehyde, and a >P(O)H species.
Abstract
Synth. Commun. 2007, 37, 323
BROMINATION OF SOME AROMATIC COMPOUNDS WITH POTASSIUM BROMIDE IN THE PRESENCE OF BENZYLTRIPHENYLPHOSPHONIUM PEROXODISULFATE
Hassan Tajik,1 Iraj Mohammadpoor‐Baltork,2 and Jalal Albadi1
1Department of Chemistry, Guilan University, Rasht, Iran and Persian Gulf University, Bushehr, Iran
2Department of Chemistry, College of Science, Isfahan University, Isfahan, Iran
A simple, efficient, and mild method for selective bromination of some activated aromatic compounds using potassium bromide in the presence of benzyltriphenylphosphonium peroxodisulfate in nonaqueous solution is reported. The results obtained revealed good to excellent selectivity between ortho and para positions of phenols and methoxyarenes.
Abstract
Synth. Commun. 2007, 37, 329
SUBSTITUTED QUINOLINONES, PART 12: HETEROCYCLIZATION REACTIONS OF 3‐(3‐CHROMONYL)ACRYLOYLQUINOLINONE WITH SOME BIFUNCTIONAL NUCLEOPHILES
Mohamed Abass, Mohamed Abdel‐Megid, and Mohamed Hassan
Chemistry Department, Faculty of Education, Ain Shams University, Roxy, Heliopolis, Cairo, Egypt
The condensation of 3‐acetylquinolinone (1) with 3‐formylchromone (2) gave the enone derivative 3. The treatment of the enone 3 with different bifunctional nucleophiles at different reaction conditions led to several new five‐ and six‐membered heterocyclic systems bearing a quinolinone moiety.
