作者:Issa Yavari、Zinatossadat Hossaini、Maryam Sabbaghan、Majid Ghazanfarpour-Darjani
DOI:10.1016/j.tet.2007.06.102
日期:2007.9
The reaction of ethyl propiolate with triphenylphosphine (Ph3P) in the presence of N-alkylisatins led to ethyl 2,2,2-triphenyl-2,5-dihydro- 1,2-lambda(5)-oxaphosphole-4-carboxylate-spiro-1-alkyl-1,3-dihydro-2H-indol-2-ones in good yield. The reaction of dialkyl acetylene-dicarboxylates with Ph3P in the presence of N-alkylisatins led to dialkyl 2,2,2-triphenyl-2,5-dihydro- 1,2-lambda(5)-oxaphosphole-3,4-dicarboxylatespiro-1-alkyl-1,3-dihydro- 2H-indol-2-ones and alkyl 4-(alkoxy)-5-oxo-2,5-dihydro-3-furancarboxylate-spiro-1-alkyl-1,3-dihydro2H-indol-2-ones. (C) 2007 Published by Elsevier Ltd.