[4-(hex-1-ynyl-diisopropyl-silanyloxy)-but-2-ynyl]-prop-2-ynyl-carbamic acid benzyl ester 在
carbon monoxide,cobalt,cyclopenta-1,3-diene 作用下,
以
xylene 为溶剂,
以73%的产率得到4-Butyl-3,3-diisopropyl-1,3,6,8-tetrahydro-2-oxa-7-aza-3-sila-as-indacene-7-carboxylic acid benzyl ester