The tide compound was synthesized from propargyl alcohol and L-glutamic acid via a convergent approach using Sharpless asymmetric epoxidation and asymmetric dihydroxylation for the introduction of chiral centers and Pd-o-catalyzed coupling for construction of the carbon skeleton.
The tide compound was synthesized from propargyl alcohol and L-glutamic acid via a convergent approach using Sharpless asymmetric epoxidation and asymmetric dihydroxylation for the introduction of chiral centers and Pd-o-catalyzed coupling for construction of the carbon skeleton.
A mild and efficient method for converting alcohols and tetrahydropyranyl ethers to bromides with inversion of configuration
作者:Akira Tanaka、Takayuki Oritani
DOI:10.1016/s0040-4039(97)00232-3
日期:1997.3
Bromotriphenylphosphonium salt 2, generated by adding 2,4,5,6-tetrabromo-2,5-cyclohexadienone (1) to triphenylphosphine in CH2Cl2 or CH3CN convertedalcohols and tetrahydropyranyl ethers to the corresponding bromides in high yields.
Direct transformation of sterically less hindered silyl ethers to the corresponding bromides with inversion of configuration
作者:Akira Tanaka、Takayuki Oritani
DOI:10.1016/s0040-4039(97)01721-8
日期:1997.10
The phosphonium salt 2, generated by adding 2,4,4,6-tetrabromo-2,5-cyclohexadienone1 to triphenylphosphine in CH3CN-THF or 1,2-dichloroethane converted sterically less congested silyl ethers directly to the corresponding bromides in high yields.