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2 Reaction of Diarylmethyl Anions at Secondary Alkyl and Cycloalkyl Carbons
作者:Riku Shinohara、Narihito Ogawa、Hidehisa Kawashima、Kyohei Wada、Shun Saito、Takashi Yamazaki、Yuichi Kobayashi
DOI:10.1002/ejoc.201801596
日期:2019.2.21
The substitution reactions of diphenyl sec‐alkyl phosphates with Ar2CH anions were swift and proceeded with inversion. In contrast, the diphenyl substituted‐cyclohexyl phosphates proceeded with inversion, but showed different reactivity depending on the relative stereochemistry of the substituent and the (PhO)2PO2 leaving group. The difference in reactivity was rationalized by computational calculation
磷酸二苯基仲烷基磷酸酯与Ar 2 CH阴离子的取代反应迅速进行,并进行了转化。相比之下,二苯基取代的环己基磷酸酯进行了转化,但根据取代基和(PhO)2 PO 2离开基团的相对立体化学,显示出不同的反应性。反应性的差异通过过渡能的计算得到合理化。