Self-Condensation of N-tert-Butanesulfinyl Aldimines: Application to the Rapid Asymmetric Synthesis of Biologically Important Amine-Containing Compounds
摘要:
Highly diastereoselective intra- and intermolecular self-condensation reactions of N-tert-butanesulfinyl aldimines have been developed and applied to the rapid, asymmetric synthesis of trans-2-aminocyclopentanecarboxylic acid and the drug candidate SC-53116. Key to both syntheses is a novel microwave-assisted reaction in which N-sulfinyl aldimines are cleanly converted into nitriles in high-yielding concerted elimination processes.
Visible-Light-Induced Acetalization of Aldehydes with Alcohols
作者:Hong Yi、Linbin Niu、Shengchun Wang、Tianyi Liu、Atul K. Singh、Aiwen Lei
DOI:10.1021/acs.orglett.6b03403
日期:2017.1.6
have achieved a simple and general method for acetalization of aldehydes by means of a photochemical reaction under low-energy visible light irradiation. A broad range of aromatic, heteroaromatic, and aliphatic aldehydes have been protected under neutral conditions in good to excellent yields using a catalytic amount of Eosin Y as the photocatalyst. Our visible light mediated acetalization strategies are
[EN] HYDROFORMYLATION PROCESS FOR PRODUCING 1,6-HEXANEDIOL DERIVATIVES<br/>[FR] PROCÉDÉ D'HYDROFORMYLATION POUR PRODUIRE DES DÉRIVÉS DE 1,6-HEXANEDIOL
申请人:BASF SE
公开号:WO2018228879A1
公开(公告)日:2018-12-20
The present invention relates to a two-stage hydroformylation process for producing pound of the formula (I) and to a process for producing a compound of the formula (V) comprising the two-stage hydroformylation process for producing a compound of the formula (I) followed by hydrogenation of the compound of the formula (I).
Palladium catalysed cross-coupling of vinyl triflates with 9-alkyl-9-borobicyclo[3,3,1]nonanes. total synthesis of (−)-Isoseiridine.
作者:Ronald Grigg、Peter Kennewell、Vladimir Savic
DOI:10.1016/s0040-4020(01)80703-1
日期:1994.5
Catalysed cross-coupling of butenolide-3-triflates to 9-alkyl-9-borobicyclo[3.3.1]nonanes occurs in moderate to good yield and tolerates a range of functionality. Application of this methodology combined with addition of diethylzinc to a butenolide aldehyde in the presence of an ephedrine derivative leads to a 3-step synthesis of (−)-isoseiridine with 88%e.e. in good yield.
Hydroformylation process for producing 1,6-hexanediol derivatives
申请人:BASF SE
公开号:US10941092B2
公开(公告)日:2021-03-09
The present invention relates to a two-stage hydroformylation process for producing pound of the formula (I) and to a process for producing a compound of the formula (V) comprising the two-stage hydroformylation process for producing a compound of the formula (I) followed by hydrogenation of the compound of the formula (I).