121155-51-9Relevant articles and documents
Photocatalytic Generation of π-Allyltitanium Complexes from Butadiene via a Radical Strategy
Li, Fusheng,Lin, Shuangjie,Li, Xiyu,Shi, Lei
, p. 1889 - 1900 (2021/03/01)
The direct conversion of industrial feedstock chemicals into highly valuable fine chemical intermediates is of great appeal to the synthetic community as well as industrial applications. This study reports a conceptually new radical strategy for the photocatalytic generation of π-allyltitanium complexes from butadiene. This novel and environmentally benign strategy enables the direct three-component allylation of carbonyls with 1,3-butadiene and α-bromocarboxylates, providing rapid access to valuable homoallylic alcohols with exceptional regio- and diastereoselectivity control.
Diastereoselective chain-elongation reactions using microreactors for applications in complex molecule assembly
Carter, Catherine F.,Lange, Heiko,Sakai, Daiki,Baxendale, Ian R.,Ley, Steven V.
supporting information; experimental part, p. 3398 - 3405 (2011/05/02)
Diastereoselective chain-elongation reactions are important transformations for the assembly of complex molecular structures, such as those present in polyketide natural products. Here we report new methods for performing crotylation reactions and homopropargylation reactions by using newly developed low-temperature flow-chemistry technology. In-line purification protocols are described, as well as the application of the crotylation protocol in an automated multi-step sequence. Polyketides in flow: By using new low-temperature reactors, the scope of reactions conveniently performed in a flow process has been extended to encompass diastereoselective chain elongations. Various aldehydes undergo Roush crotylations and Marshall homopropargylation reactions smoothly in flow (see scheme), with incorporated in-line work-ups that drastically reduce the amount of time required for these transformations. Copyright
Synthesis of (S,S)-diisopropyl tartrate (E)-crotylboronate and its reaction with aldehydes: (2r,3r,4r)-1,2-dideoxy-2-ethenyl-4,5-o-(1-methylethylidene)- xylitol
Sun, Huikai,Roush, William R.
, p. 181 - 196 (2014/04/03)
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