评“通过晶体基质限制实现 1,3-二甲基环丁二烯的单晶 X 射线结构”。

Comment on "Single-crystal X-ray structure of 1,3-dimethylcyclobutadiene by confinement in a crystalline matrix".

机构信息

Imperial College London, Department of Chemistry, London SW7 2AZ, UK.

出版信息

Science. 2010 Nov 19;330(6007):1047; author reply 1047. doi: 10.1126/science.1195752.

DOI:10.1126/science.1195752

Abstract

Legrand et al. (Reports, 16 July 2010, p. 299) reported on the photolytic reaction of an α-pyrone confined in a crystalline matrix. Their structural analysis invoked four products: activated precursor, isomeric Dewar β-lactone, and square and rectangular isomers of 1,3-dimethylcyclobutadiene. The reported x-ray data, however, suggest that all observed structures correspond to only one distinct species, the Dewar β-lactone.

摘要

莱格朗等人（报告，2010 年 7 月 16 日，第 299 页）报道了一种 α-吡喃酮在结晶基质中的光解反应。他们的结构分析推断出了四种产物：活化前体、异构 Dewar β-内酰胺、以及 1,3-二甲基环丁二烯的正方形和长方形异构体。然而，所报道的 X 射线数据表明，所有观察到的结构都只对应于一种独特的物质，即 Dewar β-内酰胺。