A facile synthesis of substituted 4,5,6,7-tetrahydropyrazolo[3,4-<i>d</i>]-pyrimidine and 1,2,3,4-tetrahydropyrazolo[1,5-<i>a</i>]triazine derivatives
作者:J. N. Vishwakarma、M. Mofizuddin、H. Ila、H. Junjappa
DOI:10.1002/jhet.5570250523
日期:1988.9
Cyclocondensation of 3(5)-alkylamino- and 3(5-arylaminopyrazoles 1a-c and 1d-e with formaldehyde and primary amines affords novel tetrahydropyrazolo[3,4-d]pyrimidines 2 and tetrahydropyrazolo[1,5-a]triazine derivatives 3 respectivley in good yields.
3(5)-烷基
氨基-和3(5-芳基
氨基
吡唑1a-c和1d-e与
甲醛和
伯胺的环缩合反应提供了新颖的四氢
吡唑并[3,4- d ]
嘧啶2和四氢
吡唑并[1,5- a ]三嗪衍
生物3pectelevley,高产。
A facile one-pot synthesis of novel substituted 1,2,3,4-tetrahydropyrimidines Part 5 : Synthesis of bis[(l-alkyl/aralkyl)-5-benzoyl-6-methylthio-1,2,3,4-tetrahydropyrimidinyl]alkane and benzene, bis[3-phenyl-7-methyl-4,5,6,7-tetrahydropyrazolo[3,4-<i>d</i>]-pyrimidinyl]alkane and bis[1-benzyl-7-phenyl-1,2,3,4-tetrahydro-pyrazolo[1,5-<i>a</i>]triazinyl]alkane and benzene
作者:Milan Ch. Dutta、Kaushik Chanda、Jai N. Vishwakarma、Philippe Helissey
DOI:10.1002/jhet.5570420535
日期:2005.7
reaction of N,S-acetals with formaldehyde and diamines. Reaction of pyrazoles 3a and 3b with diamines and formaldehyde yield bis-4,5,6,7-tetrahydropyrazolo[3,4-d]pyrimidinylalkanes 4a-b and bis-1,2,3,4-tetrahydropyrazolo[1,5-a]triazinylalkanes and benzene 5a-c respectively in good yields.
通过N,S-
缩醛与
甲醛和二胺的反应合成了双1,2,3,4-四氢
嘧啶基
烷烃/苯2a-f。
吡唑3a和3b与二胺和
甲醛反应生成双-4,5,6,7-四氢
吡唑并[3,4- d ]
嘧啶基
烷烃4a-b和双1,2,3,4-四氢
吡唑并[1,5- a ]三嗪基
烷烃和苯5a-c分别具有良好的收率。
Vishwakarma, J. N.; Chowdhury, B. K. Roy; Ila, H., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1985, vol. 24, p. 472 - 476
作者:Vishwakarma, J. N.、Chowdhury, B. K. Roy、Ila, H.、Junjappa, H.
DOI:——
日期:——
VISHWAKARMA, J. N.;MOFIZUDDIN, M.;ILA, H.;JUNJAPPA, H., J. HETEROCYCL. CHEM., 25,(1988) N, C. 1387-1390
作者:VISHWAKARMA, J. N.、MOFIZUDDIN, M.、ILA, H.、JUNJAPPA, H.
DOI:——
日期:——