5-(2-苯基乙基)-1,3,4-恶二唑-2-胺 以
various solvent(s) 为溶剂,
生成 5-Oxo-2-phenethyl-5H-[1,3,4]oxadiazolo[3,2-a]pyrimidine-6-carboxylic acid ethyl ester
参考文献:
名称:
Murty, M. S. R.; Ramalingam, T.; Diwan, P. V., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1988, vol. 27, # 1-12, p. 293 - 294
Synthesis of 2-amino-5-substituted-1,3,4-oxadiazoles using 1,3-dibromo-5,5-dimethylhydantoin as oxidant
摘要:
A scalable synthesis of 5-substituted-2-amino-1,3,4-oxadiazoles via oxidation of a thiosemicarbazide precursor is described. The thiosemicarbazide intermediates are easily accessed from the corresponding acid chlorides. Oxidative cyclization using 1,.3-dibromo-5,5-dimethylhydantoin as the primary oxidant, in the presence of potassium iodide, gives a variety of oxadiazoles in good yields. This methodology utilizes a commercially inexpensive and easily handled oxidant. (c) 2006 Elsevier Ltd. All rights reserved.
Gehlen,H.; Just,M., Justus Liebigs Annalen der Chemie, 1966, vol. 692, p. 151 - 165
作者:Gehlen,H.、Just,M.
DOI:——
日期:——
Gehlen,H.; Moeckel,K., Justus Liebigs Annalen der Chemie, 1962, vol. 660, p. 144 - 147
作者:Gehlen,H.、Moeckel,K.
DOI:——
日期:——
Maggio et al., Annali di Chimica, 1960, vol. 50, p. 491,503
作者:Maggio et al.
DOI:——
日期:——
Synthesis of N-pyrimidin[1,3,4]oxadiazoles and N-pyrimidin[1,3,4]-thiadiazoles from 1,3,4-oxadiazol-2-amines and 1,3,4-thiadiazol-2-amines via Pd-catalyzed heteroarylamination
An efficient and practical procedure was developed to prepare various N-pyrimidin[1,3,4]oxadiazole and thiadiazole scaffolds using a Buchwald-type coupling. The products of this reaction are otherwise difficult to access and could be used as building blocks in drug design. (C) 2019 Published by Elsevier Ltd.
Gehlen, Justus Liebigs Annalen der Chemie, 1949, vol. 563, p. 185,195