α′-methylated products. Treatment in the absence of an external electrophile resulted either in allenic alcohols or in propargylic alcohols, or in mixtures of both compounds, probably arising from competing [1,2]- and [2,3]-Wittig rearrangements, in varying ratios. A high anti diastereoselectivity was observed in the propargylic alcohols produced. (© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)
(杂芳基)烷基
炔丙基醚已经合成并在-78°C下在THF中用nBuLi处理。所得的α-或α'-
锂硫衍
生物可以用
碘甲烷捕获,得到相应的α-或α'-甲基化产物。在没有外部亲电子试剂的情况下,处理会产生
丙二烯醇或炔
丙醇,或两种化合物的混合物,这可能是由不同比例的 [1,2]- 和 [2,3]-Wittig 重排引起的。在产生的炔
丙醇中观察到高抗非对映选择性。(© Wiley-
VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)