Synthesis of derivatives of 5-amino-4-acyl-1,2,3-triazole, 8-azapurine, and 1,2,3-triazolo[4,5-b]pyridin-7-one using N,N-acetals of acylketenes and tosylazide
摘要:
By reaction of N,N-acetals of acylketenes with tosylazide there were synthesized 5-amino-4-acyl-1,2,3-triazoles substituted at the endo(N1)- or exocyclic nitrogen atom. Triazoles containing a free NH2 group were used in the synthesis of the corresponding 8-azapurines and 4-acetyl-5-benzoylamino-1,2,3-triazole afforded 2-methyl-2H,4H-1,2,3-triazolo[4,5-b]pyridin-7-one.
Synthesis of functionalized pyrimidine-4-thiones and derivatives of pyrido[2,3-d]pirimidine-5-one from monoacylketene aminals
作者:V. A. Dorokhov、A. V. Komkov、E. M. Shashkova、V. S. Bogdanov、M. N. Bochkareva
DOI:10.1007/bf00699001
日期:1993.11
give the corresponding thioamides which undergo cyclization by sodium methoxide in methanol to afford 6-R-amino-5-acetyl-2-phenyl-3H-pyrimidine-4-thiones. A scheme for constructing the pyrido[2,3-d]pyrimidine system from keteneaminals is offered. The reaction of 6-R-amino-5-acetyl-2-phenyl-3H-pyrimidine-4-thiones with dimethylformamide dimethylacetal leads to 8-R-N-4-methylthio-8H-pyrido-[2,3-d]pyrimidine-5-ones
Synthesis of acylketene N,N-acetals and their E,Z-isomerism
作者:V. A. Dorokhov、M. F. Gordeev、A. V. Komkov、V. S. Bogdanov
DOI:10.1007/bf00960665
日期:1990.2
Synthesis of derivatives of 5-amino-4-acyl-1,2,3-triazole, 8-azapurine, and 1,2,3-triazolo[4,5-b]pyridin-7-one using N,N-acetals of acylketenes and tosylazide
作者:M. F. Gordeev、A. V. Komkov、V. S. Bogdanov、V. A. Dorokhov
DOI:10.1007/bf00962394
日期:1990.6
By reaction of N,N-acetals of acylketenes with tosylazide there were synthesized 5-amino-4-acyl-1,2,3-triazoles substituted at the endo(N1)- or exocyclic nitrogen atom. Triazoles containing a free NH2 group were used in the synthesis of the corresponding 8-azapurines and 4-acetyl-5-benzoylamino-1,2,3-triazole afforded 2-methyl-2H,4H-1,2,3-triazolo[4,5-b]pyridin-7-one.