Synthesis of novel C2-symmetric ligands based on (R,R)- and (S,S)-diphenyl-1,3-propanediol
摘要:
A range of novel Ct-symmetric dioxygen and dinitrogen ligands can readily be obtained through the interconversion of the parent 1,3-diphenyl-1,3-propanediol enantiomers which are, in turn, accessed in good yields via a Sharpless asymmetric epoxidative resolution. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthesis of novel C2-symmetric ligands based on (R,R)- and (S,S)-diphenyl-1,3-propanediol
摘要:
A range of novel Ct-symmetric dioxygen and dinitrogen ligands can readily be obtained through the interconversion of the parent 1,3-diphenyl-1,3-propanediol enantiomers which are, in turn, accessed in good yields via a Sharpless asymmetric epoxidative resolution. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthesis of virtually enantiopure aminodiols with three adjacent stereogenic centers by epoxidation and ring-opening
作者:Lan Luo、Hisashi Yamamoto
DOI:10.1039/c5ob01808k
日期:——
Synthesis of virtually enantiopure aminodiols with three consecutive stereocenters is accomplished by a sequential cascade of epoxidation and ring-opening.
通过环氧化和环开启的顺序级联反应,可以合成具有三个连续立体中心的几乎对映纯的氨基二醇。
Enantioselective One-Pot Catalytic Synthesis of 4,5-Epoxy-3-alkanols and 1-Phenyl-2,3-epoxy-1-alkanols from α,β-Unsaturated Aldehydes
Conformationally restricted perhydrobenzoxazines have been demonstrated to be good chiral ligands for one-pot asymmetric ethylation/epoxidation, and the unprecedented arylation/epoxidation of trisubstituted α,β-unsaturated aldehydes. The scope of the reaction has been studied and a wide set of substrates with allylic strain of different nature has been explored, obtaining good or total diastereoselectivities
Stereocontrolled ring-opening of some enantiomerically enriched epoxy ketones and epoxy alcohols using trimethylaluminium: synthesis of (S )-2-arylpropanoic acids
作者:Lydia Carde、D. Huw Davies、Stanley M. Roberts
DOI:10.1039/b000996m
日期:——
cleavage furnished (S)-2-phenylpropanoic acid 11. In a complementary sequence epoxy ketones (−)-6 and 25 were converted into (S)-2-phenylpropanoic acid and (S)-fenoprofen 5 respectively by reduction with zinc borohydride, reaction with trimethylaluminium and oxidative cleavage. Similarly epoxy ketones (−)-6, 21 and 28 were treated with methylmagnesiumiodide, trimethylaluminium and the resultant alcohols subjected
Synthesis of novel C2-symmetric ligands based on (R,R)- and (S,S)-diphenyl-1,3-propanediol
作者:Gregory H.P Roos、A.Richard Donovan
DOI:10.1016/s0957-4166(99)00074-9
日期:1999.3
A range of novel Ct-symmetric dioxygen and dinitrogen ligands can readily be obtained through the interconversion of the parent 1,3-diphenyl-1,3-propanediol enantiomers which are, in turn, accessed in good yields via a Sharpless asymmetric epoxidative resolution. (C) 1999 Elsevier Science Ltd. All rights reserved.