824. The preparation and properties of some 2 : 3-benzo-1 : 4-diazepines
作者:I. L. Finar
DOI:10.1039/jr9580004094
日期:——
Synthesis of linked heterocycles via use of bis-acetylenic compounds
作者:Christopher D. Smith、Kirill Tchabanenko、Robert M. Adlington、Jack E. Baldwin
DOI:10.1016/j.tetlet.2006.03.052
日期:2006.5
Linked bis-pyrazoles, a pyrazolyl-isoxazole, a pyrazolyl-pyrimidine and a pyrazolyl-triazole were synthesized starting with commercially available 1,4-bis(trimethylsilyl)-1,3-butadiyne 1 or readily available bis-acetylenic diketone 22. A stepwise approach based on the use of 1 allowed the synthesis of nonsymmetrically substituted bis-pyrazoles and linked heterocycles with two different cores whereas a symmetric approach based on the use of 22 allowed a very short synthesis of symmetric bis-pyrazoles. (c) 2006 Elsevier Ltd. All rights reserved.