Asymmetric Intramolecular Hydroalkoxylation of 2‐Vinylbenzyl Alcohols with Chiral Boro‐Phosphates
作者:Caifang Han、Wei Meng、Xiangqing Feng、Haifeng Du
DOI:10.1002/anie.202200100
日期:2022.5.16
Chiral boro-phosphates were developed from chiral phosphoric acids and Piers’ borane via the release of H2. A highly enantioselective hydroalkoxylation of 2-vinylbenzyl alcohols was further demonstrated, furnishing optically active 1,3-dihydroisobenzofuran derivatives in high yields with up to 97 % ee. It is supposed that these boro-phosphates possibly interact with the substrates through O−H bond
手性硼磷酸盐是由手性磷酸和 Piers 硼烷通过释放 H 2开发的。进一步证明了 2-乙烯基苄醇的高度对映选择性加氢烷氧基化,以高达 97% 的 ee 的高产率提供光学活性 1,3-二氢异苯并呋喃衍生物。推测这些硼磷酸盐可能通过OH键活化与底物相互作用。