Copper-Catalyzed Tandem Conjugate Addition−Electrophilic Trapping: Ketones, Esters, and Nitriles as Terminal Electrophiles
摘要:
Exposure of enone substrates 1a-18a, which possess appendant ketone, ester, and nitrile moieties, to Et2Zn in the presence of catalytic Cu(OTf)2/P(OEt)3 provides the cyclized products in good to excellent yields and diastereoselectivities. These results represent the first use of ketones, esters, and nitriles as terminal electrophiles in Cu-catalyzed conjugate addition-electrophilic trapping.
BIOCONVERSION PROCESS FOR PRODUCING NYLON-7, NYLON-7,7 AND POLYESTERS
申请人:INVISTA TECHNOLOGIES S.a.r.l.
公开号:US20150337275A1
公开(公告)日:2015-11-26
Embodiments of the present invention relate to methods for the biosynthesis of di- or trifunctional C7 alkanes in the presence of isolated enzymes or in the presence of a recombinant host cell expressing those enzymes. The di- or trifunctional C7 alkanes are useful as intermediates in the production of nylon-7, nylon-7,x, nylon-x,7, and polyesters.
Sulphur-containing 5-hydroxy-alkanoic acid derivatives, their use as pharmaceutical preparations and process for their production
申请人:Lilly Industries Limited
公开号:EP0068739B1
公开(公告)日:1984-11-14
US4513005A
申请人:——
公开号:US4513005A
公开(公告)日:1985-04-23
Copper-Catalyzed Tandem Conjugate Addition−Electrophilic Trapping: Ketones, Esters, and Nitriles as Terminal Electrophiles
作者:Kyriacos Agapiou、David F. Cauble、Michael J. Krische
DOI:10.1021/ja030603l
日期:2004.4.1
Exposure of enone substrates 1a-18a, which possess appendant ketone, ester, and nitrile moieties, to Et2Zn in the presence of catalytic Cu(OTf)2/P(OEt)3 provides the cyclized products in good to excellent yields and diastereoselectivities. These results represent the first use of ketones, esters, and nitriles as terminal electrophiles in Cu-catalyzed conjugate addition-electrophilic trapping.
A regiospecific route to conjugated enones viaα-phenylthio ketones
作者:John Durman、Jason Elliott、Andrew B. McElroy、Stuart Warren
DOI:10.1039/p19850001237
日期:——
2,5-Dimethylhex-4-en-3-one, E-6-methylhept-2-en-4-one, E-7-methyloct-4-en-3-one, ar-turmerone, and E-7-oxo-act-5-enoic acid were synthesized regiospecifically viaα-phenylthio ketones from bisphenylthio carbanions and aldehydes.