Sulfamic Acid as a Cost‐Effective and Recyclable Catalyst for Protection of Carbonyls to Acetals and Ketals Under Mild Conditions

References

• Greene , T. W. and Wuts , P. G.M. 1991 . Protective Groups in Organic Synthesis , 3rd Ed. 188 New York : John Wiley & Sons .
   Google Scholar
• Perio , B. , Dozias , M. J. , Jacquault , P. and Hamelin , J. 1997 . Solvent Free Protection of Carbonyl Group under Microwave Irradiation . Tetrahedron Lett. , 38 : 7867 – 7870 .
   Web of Science ®Google Scholar
• Tateiwa , J. , Horiuchi , H. and Uemura , S. 1995 . Ce3+‐Exchanged Montmorillonite (Ce3+‐Mont) as a Useful Substrate‐Selective Acetalization Catalyst . J. Org. Chem. , 60 : 4039 – 4043 .
   Web of Science ®Google Scholar
• Clerici , A. , Pastori , N. and Porta , O. 1998 . Efficient Acetalisation of Aldehydes Catalyzed by Titanium Tetrachloride in a Basic Medium . Tetrahedron , 54 : 15679 – 15690 . [CROSSREF]
   Web of Science ®Google Scholar
• Karimi , B. and Ashtiani , A. M. 1999 . 2,3‐Dichloro‐5,6‐dicyano‐p‐benzoquinone (DDQ) as a Highly Efficient and Mild Catalyst for Diethyl Acetalization of Carbonyl Compounds . Chem. Lett. , : 1199 – 1200 . [CROSSREF]
   Google Scholar
• Ishihara , K. , Karumi , Y. , Kubota , M. and Yamamoto , H. 1996 . Scandium Trifluoromethanesulfonimide and Scandium Trifluoromethanesulfonate as Extremely Active Acetalization Catalysts . Synlett , : 839 – 841 . [CROSSREF]
   Google Scholar
• Lee , S. H. , Lee , J. H. and Yoon , C. M. 2002 . An Efficient Protection of Carbonyls and Deprotection of Acetals using Decaborane . Tetrahedron Lett. , 43 : 2699 [CROSSREF]
   Web of Science ®Google Scholar
• Bonacorso , H. G. , Martins , M. A.P. , Bittencourt , S. R.T. , Lourega , R. V. , Zanatta , N. and Flores , A. F.C. 1999 . Trifluoroacetylation of Unsymmetrical Ketone Acetals. A Convenient Route to Obtain Alkyl Side Chain Trifluoromethylated Heterocycles . J. Fluorine Chem. , 99 : 177 – 182 . [CROSSREF]
   Web of Science ®Google Scholar
• Jin , T. S. , Sun , G. , Li , Y. W. and Li , T. S. 2002 . An Efficient and Convenient Procedure for the Preparation of 1,1‐Diacetates from Aldehydes Catalyzed by H2NSO3H . Green Chem. , : 255 – 256 . [CROSSREF]
   Google Scholar
• Li , J. T. , Han , J. F. , Yang , J. H. and Li , T. S. 2003 . An Efficient Synthesis of 3,4‐Dihydropyrimidin‐2‐ones Catalyzed by NH2SO3H under Ultrasound Irradiation . Ultrasonics Sonochem. , 10 : 119 – 122 . [CROSSREF]
   PubMed Web of Science ®Google Scholar
• Wang , B. , Yang , L. M. and Suo , J. S. 2003 . Solvent‐Free Tetrahydropyranylation of Alcohols with Sulfamic Acid as Reusable Catalyst . Synth. Commun. , 33 : 3929 – 3932 . [CROSSREF]
   Web of Science ®Google Scholar
• Wang , B. , Gu , Y. L. , Yang , L. M. and Suo , J. S. 2004 . Sulfamic Acid as an Efficient and Recycling Catalyst for Addition of Aliphatic Acid to Cyclic Olefins . Catal. Lett. , 96 ( 1–2 ) : 71 – 74 . [CROSSREF]
   Google Scholar
• Wang , B. , Yang , L. M. and Suo , J. S. 2003 . Ionic Liquid‐Regulated Sulfamic Acid: Chemoselective Catalyst for the Transesterification of β‐Ketoesters . Tetrahedron Lett. , 44 : 5037 – 5039 . [CROSSREF]
   Web of Science ®Google Scholar
• Wang , B. , Gu , Y. , Luo , C. , Yang , T. , Yang , L. and Suo , J. 2004 . Sulfamic Acid as a Cost‐Effective and Recyclable Catalyst for Liquid Beckmann Rearrangement; a Green Process to Produce Amides from Ketoximes Without Waste . Tetrahedron Lett. , 45 : 3369 – 3372 . [CROSSREF]
   Web of Science ®Google Scholar
• Nagarajan , R. , Magesh , C. J. and Perumal , P. T. 2004 . Inter‐ and Intramolecular Imino Diels–Alder Reactions Catalyzed by Sulfamic Acid: A Mild and Efficient Catalyst for a One‐Pot Synthesis of Tetrahydroquinolines . Synthesis , : 69 – 74 .
   Google Scholar