BIMP-Catalyzed 1,3-Prototropic Shift for the Highly Enantioselective Synthesis of Conjugated Cyclohexenones.

BIMP-Catalyzed 1,3-Prototropic Shift for the Highly Enantioselective Synthesis of Conjugated Cyclohexenones.
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DOI:
10.1002/anie.202006202
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发表时间:
2020-09-28
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
通讯作者:
Dixon DJ
Dixon DJ
中科院分区:
其他
文献类型:
--
作者:
Golec JC;Carter EM;Ward JW;Whittingham WG;Simón L;Paton RS;Dixon DJ

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A bifunctional iminophosphorane (BIMP)‐catalysed enantioselective synthesis of α,β‐unsaturated cyclohexenones through a facially selective 1,3‐prototropic shift of β,γ‐unsaturated prochiral isomers, under mild reaction conditions and in short reaction times, on a range of structurally diverse substrates, is reported. α,β‐Unsaturated cyclohexenone products primed for downstream derivatisation were obtained in high yields (up to 99 %) and consistently high enantioselectivity (up to 99 % ee). Computational studies into the reaction mechanism and origins of enantioselectivity, including multivariate linear regression of TS energy, were carried out and the obtained data were found to be in good agreement with experimental findings. Get a shift on: An enantioselective bifunctional iminophosphorane (BIMP)‐catalysed 1,3‐prototropic shift of structurally diverse β,γ‐unsaturated cyclohexenones is reported. The reaction is high yielding (up to 99 %) in a short time span and proceeds with a high level of selectivity (up to 99 % ee) on a wide range of substrates. To complement the experimental data, in‐depth computational studies were undertaken, including multivariate linear regression of TS energy.
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