Synthesis of Benzofulvenes through Rhodium-Catalyzed Transannulation of Enynyl Triazoles
作者:Seohyun Shin、Jeong-Yu Son、Changwook Choi、Sanghyuck Kim、Phil Ho Lee
DOI:10.1021/acs.joc.6b02140
日期:2016.12.2
cyclization of (E)-ethyl 2-(1-alkyl and arylsulfonyl-1H-1,2,3-triazol-4-yl)-3-aryl acrylate generated from (E)-ethyl 2-benzylidenebut-3-ynoates and N-sulfonyl azides in the presence of a copper catalyst was developed for the synthesis of a large number of functionalized benzofulvenes. Moreover, the synthesis of benzofulvenes was demonstrated as a one-pot method through tandem copper-catalyzed [3 + 2] cycloaddition
由(E)-乙基2-苄叉基丁烯生成的(E)-乙基2-(1-烷基和芳基磺酰基-1 H -1,2,3-三唑-4-基)-3-芳基丙烯酸酯的铑催化脱氮环化反应开发了在铜催化剂存在下的-3-炔酸酯和N-磺酰叠氮化物,用于合成大量官能化的苯并富勒烯。此外,通过串联铜催化的[3 + 2]环加成反应和铑催化的(E)-2-苄叉基丁酸-3-氧合乙基酯和N-磺酰叠氮化物的铑催化的脱氮环化反应,一锅法证明了苯并富烯的合成。