Sequential hydrostannylation-cyclisation of δ- and ω-allenyl aryl halides. Cyclisation at the proximal carbon
作者:Ronald Grigg、JoséM Sansano
DOI:10.1016/0040-4020(96)00801-0
日期:1996.10
catalysed hydrostannylation of (Bu3SnH, THF, 0°C) of δ- and ω-allenyl aryl halides followed by mono- or bis-cyclisation (MeCN, 80°C) affords small (5–7), large (11–17) and spirocyclic rings in which cyclisation occurs at the proximal carbon of the orginal allene. The reaction proceeds via stereoselective allylstannane formation. The cyclisation products are α-vinyl oxygen- and nitrogen-heterocycles
钯催化的δ-和ω-烯基芳基卤化物的(Bu 3 SnH,THF,0°C)加氢苯乙烯化反应,然后进行单环或双环化(MeCN,80°C),得到的小(5-7),大的(11) –17)和螺环,其中环化发生在原始艾伦的近端碳上。该反应通过立体选择性烯丙基锡烷形成而进行。环化产物是α-乙烯基氧和氮杂环。