Synthesis of 3-Phenylsulfanyl-1,2-dihydronaphthalenes from Methylenecyclopropanes and Benzenethiol
作者:Xian Huang、Lei Yu、Minghua Xie
DOI:10.1055/s-2006-926268
日期:——
Reaction of methylenecyclopropanes and benzenethiol in the presence of azobisisobutyronitrile gave 3-phenylsulfanyl-1,2-dihydronaphthalenes selectively.
Stereoselective Aminobromination of Alkylidenecyclopropanes with TsNH<sub>2</sub>and NBS as Nitrogen and Bromine Sources: A Simple Access to γ-Bromohomoallylic Sulfonamides
作者:Xian Huang、Wei-Jun Fu
DOI:10.1055/s-2006-926350
日期:——
A convenient and efficient method for aminobromination of alkylidenecyclopropanes is reported. This is exemplified in the stereoselective preparation of N-[(Z)-3-bromobut-3-en-1-yl]-p-toluenesulfonamides by using p-toluenesulfonamide (TsNH2) and N-bromosuccinimide (NBS) as nitrogen and bromine sources, respectively.
The ringexpansion of small-ring compounds provides a powerful method for the construction of various cyclic compounds. Herein, nitrene equivalent mediated metal-free ringexpansions of alkylidenecyclopropanes (ACPs) and an alkylidenecyclobutane (ACB) were described. In this synthesis, a series of aryl-substituted cyclobutylidene and cyclopentylidene hydrazine derivatives were obtained under mild conditions
BF3·OEt2-catalyzed intermolecular reactions of arylmethylenecyclopropanes with (E)-1,1,3-triarylprop-2-en-1-ols
作者:Lei Wu、Min Shi
DOI:10.1016/j.tet.2011.06.009
日期:2011.8
BF3 center dot OEt2-catalyzed intermolecular reactions of arylmethylenecyclopropanes with (E)-1,1,3-triarylprop-2en-1-ols produced the corresponding triene compounds, alcoholic derivatives or cyclobutane derivatives in moderate to excellent yields under mild conditions. (C) 2011 Elsevier Ltd. All rights reserved.