New bridgehead-substituted 1-(arylsulfonyl)bicyclo[1.1.0]butanes and some novel addition reactions of the bicyclic system
作者:Yehiel Gaoni
DOI:10.1016/s0040-4020(01)80112-5
日期:1989.1
In view of planned syntheses of target cyclobutane derivatives, a series of new 3-substituted bicyclobutanes was prepared from sulfones 1–7. Some novel addition reactions involving the central bond were then applied to several of the new compounds as well as to some previously described bicyclobutanes. These reactions include the additions of hydrazoic acid, of cyanocuprate reagents other than methyl
Aryl cyclobutyl sulfones by reduction of 1-arylsulfonylbicyclobutanes with lithium aluminium hydride. synthesis of racemic junionone
作者:Yehiel Gaoni
DOI:10.1016/s0040-4039(00)85802-5
日期:1982.1
Cyclobutyl sulfones are obtained by reduction of bicyclobutyl sulfones with lithiumaluminium hydride and these may be used in further synthetic transformations, as illustrated by the synthesis of rac-junionone.
Regiospecific additions of hydrazoic acid and benzylamine to 1-(arylsulfonyl)bicyclo[1.1.0]Butanes. Application to the synthesis of cis and trans 2,7-methanoglutamic acids
作者:Yehiel Gaoni
DOI:10.1016/s0040-4039(00)80361-5
日期:——
Addition of hydrazoicacid or benzylamine to 1-(arylsulfonyl) bicyclobutanes introduces the nitrogen nucleophlle at position 3 of the derived cyclobutane, even when a carboxyl derivative is present at this position as a second activating group. Precursors of α-amino cyclobutane carboxylic acids may thus be obtained and these can be further transformed to the title diacids via carbonylation α to the
One-Pot Synthesis of Strain-Release Reagents from Methyl Sulfones
作者:Myunggi Jung、Vincent N. G. Lindsay
DOI:10.1021/jacs.2c00923
日期:2022.3.23
their increasing utility, their preparation typically requires multiple steps in low overall yield. In this work, we report an expedient and general one-pot procedure for the synthesis of 1-sulfonylbicyclo[1.1.0]butanes from readily available methyl sulfones and inexpensive epichlorohydrin via the dialkylmagnesium-mediated formation of 3-sulfonylcyclobutanol intermediates. Furthermore, the process was
Bridgehead reactivity, nucleophilic and radical additions, and lithium aluminum hydride reduction of 1-(arylsulfonyl)bicyclobutanes: general access to substituted, functionalized cyclobutanes. Syntheses of (.+-.)-citrilol acetate, (.+-.)-junionone, and the tricyclo[3.3.0.01,4]octane and tricyclo[4.3.0.01,7]nonane ring systems