Protein self-assembly induces promiscuous nucleophilic biocatalysis in Morita–Baylis–Hillman (MBH) reaction
作者:Pralhad N. Joshi、Landa Purushottam、Nirmal K. Das、Saptarshi Mukherjee、Vishal Rai
DOI:10.1039/c5ra23949d
日期:——
Self-assembled states of proteins render efficient promiscuous nucleophilic biocatalysis in MBH reaction in a green process.
蛋白质的自组装状态在MBH反应中实现了高效的杂多亲核生物催化作用,这是一种绿色过程。
Iron(III) chloride-catalysed direct nucleophilic α-substitution of Morita-Baylis-Hillman alcohols with alcohols, arenes, 1,3-dicarbonyl compounds, and thiols
作者:Xiaoxiang Zhang、Weidong Rao、Sally、Philip Wai Hong Chan
DOI:10.1039/b908447a
日期:——
A general and efficient direct method for the α-substitution of Morita-Baylis-Hillman alcohols with carbon- and heteroatom-centred nucleophiles such as alcohols, arenes, 1,3-dicarbonyl compounds, and thiols in the presence of FeCl3·6H2O as catalyst has been developed. The reaction is operationally straightforward, accomplished in good to excellent product yields (40â99%) and with exclusive α-regioselectivity under mild conditions that did not need an inert and moisture-free environment.
A highly efficient kinetic resolution of Morita–Baylis–Hillman adducts achieved by N–Ar axially chiral Pd-complexes catalyzed asymmetric allylation
作者:Feijun Wang、Shengke Li、Mingliang Qu、Mei-Xin Zhao、Lian-Jun Liu、Min Shi
DOI:10.1039/c1cc15543a
日期:——
Palladium complexes with an axially chiral NâAr framework have been developed. These complexes showed high stereoselectivities in asymmetric allylic arylation to achieve the kinetic resolution of MoritaâBaylisâHillman adducts, affording up to 99% ee of (E)-allylation products and 92% ee of recovered MoritaâBaylisâHillman adducts.
Abstract An efficient NaNO2-catalyzed synthesis of 2-methylene-3-cyclohexenones from easily accessible cyclohexenone-MBH acetates has been established for the first time. Target products were rapidly generated in moderate to high yields and with relatively high E/Z selectivity. Easy operation, good functional group tolerance, mild reaction conditions and the practicality of high efficiency of NaNO2
Substituted (
<i>E</i>
)‐2‐Methylene‐3,4‐cyclohexenones through Direct and Convenient Synthesis from Cyclohexenone‐MBH Alcohol in the Presence of DMAP
作者:Hong‐Xia Ren、Xiang‐Jia Song、Lin Wu、Zhi‐Cheng Huang、Ying Zou、Xia Li、Xiao‐Wen Chen、Fang Tian、Li‐Xin Wang
DOI:10.1002/ejoc.201801301
日期:2019.1.31
An unexpected new reaction of cyclohexenone‐MBH alcohol catalyzed by DMAP has been successfully disclosed to prepare a series of substituted (E)‐2‐methylene‐3,4‐cyclohexenones in excellent yields (up to 93 %) under convenient reaction conditions. Scale‐up preparation and synthetic transformations have been conducted.