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.
Titanocene(III)-promoted Barbier-type crotylation of carbonyl compounds
Sancho-Sanz, Iris,Miguel, Delia,Millan, Alba,Estevez, Rosa E.,Oller-Lopez, Juan L.,Alvarez-Manzaneda, Enrique,Robles, Rafael,Cuerva, Juan M.,Justicia, Jose
experimental part, p. 732 - 735 (2011/03/20)
A mild, highly regio-and stereoselective method for the crotylation of aldehydes and ketones mediated/catalyzed by titanocene(III) is described. Optimized conditions permit the selective generation of γ-adducts in high yields together with high stereoselectivity, with a predominance of anti stereoisomers.
Enantioconvergent hydroboration of a racemic allene: Enantioselective synthesis of (E)-δ-stannyl- anti -homoallylic alcohols via aldehyde crotylboration
Chen, Ming,Roush, William R.
supporting information; scheme or table, p. 5744 - 5747 (2011/05/19)
The enantioconvergent hydroboration of racemic allenylstannane (±)-1 with (dIpc)2BH converts both enantiomers of (±)-1 into the enantioenriched crotylborane (S)-E-3. Subsequent crotylboration of aldehydes with (S)-E-3 provides (E)-st