The synthesis and stereospecific solid-state photodecarbonylation of hexasubstituted meso- and d,l-ketones
作者:Saori Shiraki、Arunkumar Natarajan、Miguel A. Garcia-Garibay
DOI:10.1039/c1pp05080j
日期:2011.9
Tertiary carbanions were trapped with half an equivalent of diphosgene to give meso- and d,l-hexasubstituted ketones in moderate yields and modest diastereoselectivities. The ketones were also synthesized by a step-wise synthesis in which the carbonyl group was first installed as an acid before activation and the second nucleophilic attack. This second method gave lower yields but similar diastereoselectivites
第三碳负离子被困了一半的当量 双光气为了让观-和d,升-hexasubstituted中等产量和适度的非对映选择性酮。还通过逐步合成来合成酮,其中在活化和第二次亲核进攻之前首先将羰基作为酸安装。第二种方法收率较低,但非对映选择性相似。还确定了两种方法的立体极限。所得结晶酮的光解产生了溶液中产物的混合物,但在固态下发生了化学选择性和非对映特异性。