Asymmetric synthesis of ()-(+)-ethylmethyl--propylcarbinol in high enantiomeric purity. A 1,3-oxathiane derived from (+)-pulegone as chiral adjuvant
作者:Ernest L. Eliel、Joseph E. Lynch
DOI:10.1016/s0040-4039(01)81768-8
日期:1981.1
mercaptan to (+)-pulegone followed by Na/NH3 reduction and condensation of the resulting hydroxythiol with paraformaldehyde. The utility of this chiral adjuvant is exemplified by the asymmetric synthesis of the title compound in 93% e.e.
LYNCH, J. E.;ELIEL, E. L., J. AMER. CHEM. SOC., 1984, 106, N 10, 2943-2948
作者:LYNCH, J. E.、ELIEL, E. L.
DOI:——
日期:——
Asymmetric syntheses based on 1,3-oxathianes. 2. Synthesis of chiral tertiary .alpha.-hydroxy aldehydes, .alpha.-hydroxy acids, glycols [R1R2C(OH)CH2OH], and carbinols [R1R2C(OH)Me] in high enantiomeric purity.
作者:Joseph E. Lynch、Ernest L. Eliel
DOI:10.1021/ja00322a034
日期:1984.5
Scission par le N-chlorosuccinimide de trimethyl-4,4,7 oxa-1thia-3 bicyclo [4.4.0] decanecarbinols, avec formation d'α-aldols. Etude de l'oxydation et de la reduction de ces α-aldols
Scission par le N-chlorosuccinimide de trimethyl-4,4,7 oxa-1thia-3 双环 [4.4.0] 癸烷醇,avec 形成 d'α-醛醇。α-醛醇的氧化和还原练习曲
Camphor-derived 2-stannyl-N-Boc-1,3-oxazolidine: A new chiral formylanion equivalent for the asymmetric synthesis of 1,2-diols
作者:Lino Colombo、Marcello Di Giacomo、Gloria Brusotti、Ettore Milano
DOI:10.1016/0040-4039(95)00369-n
日期:1995.4
3-oxazolidine 6, prepared from the camphor-derived aminoalcohol 5, was converted to diastereomerically pure 2-acyl derivatives 8 in three steps. Reaction of these ketones with Grignard reagents at −78°C proceeded with high stereoselectivity affording tertiarycarbinols which gave 1,2-diols with >96% ee after hydrolysis and reduction of the intermediate α-hydroxy aldehydes. A new deblocking procedure of the