ABSTRACT
The one-pot synthesis of nine 5-trichloromethyl-1,2-dimethyl-1H-pyrazolium chlorides 2 from the cyclocondensation of 4-alkoxy-1,1,1-trichloro-3-alken-2-ones [CCl3C(O)C(R2)= C(R1)OR, where R1 = H, Me, Et, n-Pr, (CH2)5CO2Et, CH2Br, Ph, 4-Br-C6H4; R2 = H, Me; and R = Me, Et] with 1,2-dimethylhydrazine is reported.
For Part 16, see Ref. Citation[12].
ACKNOWLEDGMENTS
The authors thank the Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq/PADCT III, Contract No. 62.0228/97-0-QEQ), Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (FAPERGS) for financial support and fellowships.
Notes
For Part 16, see Ref. Citation[12].