Synthesis of (E)-1-Aryl-1-alkenes via a Novel BF3·OEt2-Catalyzed Aldol−Grob Reaction Sequence
摘要:
The reactions of aromatic aldehydes with ketones in the presence of various acids were examined. The reactions generate (E)-1-aryl-1-alkenes in the presence of boron trifluoride diethyl etherate in nonnucleophilic solvents.
A tandem Aldol-Grob reaction of ketones with aromatic aldehydes
作者:George W. Kabalka、David Tejedor、Nan-Sheng Li、Rama R. Malladi、Sarah Trotman
DOI:10.1016/s0040-4020(98)00976-4
日期:1998.12
Aromatic aldehydes react with ketones to produce(E)-1-aryl-1-alkenes via a tandem Aldol-Grob cleavage reaction sequence. The reaction, initiated by boron trifluoride, also produces a carboxylic acid fragment.
Asymmetric copper-catalyzed allylic alkylation between allyl bromides and alkyl Grignard reagents using a P-chiral monophosphorus ligand is described. A range of terminal olefins bearing tertiary or quaternary carbon centers were formed in good branched/linear selectivities and excellent enantioselectivities at copper loadings as low as 0.5 mol %.
The Synthesis of Carboxylic Acids via an Aldol-Grob Reaction Sequence
作者:G. W. Kabalka、N.-S. Li、D. Tejedor、R. R. Malladi、X. Gao、S. Trotman
DOI:10.1080/00397919908086445
日期:1999.8
Abstract Ketones react with aromatic aldehydes via a tandem Aldol-Grob reaction sequence. The reaction, initiated by borontrifluoride, produces a carboxylicacid fragment and can serve as an alternative to the Baeyer-Villiger reaction.
[EN] SULFAMATE DERIVATIVE COMPOUNDS, PROCESSES FOR PREPARING THEM AND THEIR USES<br/>[FR] COMPOSÉS DE DÉRIVÉS DE SULFAMATE, LEURS PROCÉDÉS DE PRÉPARATION ET D'UTILISATION
申请人:BIO-PHARM SOLUTIONS CO LTD
公开号:WO2017150903A1
公开(公告)日:2017-09-08
The present invention relates to a pharmaceutical composition for treating or preventing CNS disorders containing a sulfamate derivative compound and/or pharmaceutically acceptable salt thereof as an active ingredient. Furthermore, the present invention relates to a method for treatment or prevention CNS disorders comprising administering a sulfamate derivative compound in a pharmaceutically effective amount to a subject in need of treatment or prevention of CNS disorders.
The copper complexes of chiral spiro phosphoramidite and phosphite ligands were found to be effective catalysts in the asymmetric allylic alkylations of cinnamyl halides with dialkylzincs. The allylic alkylation products were obtained in high regioselectivities (SN2′/SN2 up to 98:2) and enantiomeric excesses of up to 74% for SN2′ products.
发现手性螺亚磷酰胺和亚磷酸酯配体的铜配合物是肉桂酰卤与二烷基锌的不对称烯丙基烷基化的有效催化剂。烯丙基烷基化产物以高区域选择性(S N 2'/ S N 2高达98:2)获得,对于S N 2'产物,对映体过量高达74%。