Allylicalcohols were selectively oxidized into aldehydes or ketones using a Pd(OAc) 2 -Et 3 N-O 2 system. Diols with one -allylic function were selectively oxidized, with one of the hydroxyl groups remaining untouched.
使用 Pd(OAc) 2 -Et 3 NO 2 系统将烯丙醇选择性氧化成醛或酮。具有单烯丙基官能团的二醇被选择性氧化,其中一个羟基保持不变。
Three-carbon ring expansion of boracyclanes
作者:Herbert C. Brown、Seetharaman Jayaraman
DOI:10.1016/s0040-4039(00)60599-3
日期:1993.6
(α-Chloroally)lithium, generated in situ from LiNR2 and allyl chloride, reacts with cyclic borinates to furnish ring-expanded allylic boracyclenes. The undesired protonolysis by the amine generated during metalation has been overcome either by increasing the steric bulk of the alkoxy group on boron or by addition of BF3.OEt2 to deactivate the amine. The synthetic utility of the allylic B-alkoxy-3-boracyclenes
Method for producing 18F-labeled compound and high molecular compound to be used in the method
申请人:Takahashi Takashi
公开号:US09073802B2
公开(公告)日:2015-07-07
The present invention aims at solving the problems of conventional methods for producing an 18F-labeled compound, that is, the problem of purification of a compound in a liquid phase synthesis method and the problem of an insufficient yield due to the reduction of reactivity in a solid phase synthesis method. There is provided a method for producing an 18F-labeled compound including: allowing a high molecular compound containing a residue of a precursor compound to be labeled and a residue of a phase transfer catalyst in the molecule thereof to react with 18F−; and removing the 18F-labeled compound from the high molecular compound.
METHODE FOR PRODUCING F-LABELLED COMPOUND AND HIGH MOLECULAR COMPOUND TO BE USED IN THE METHOD
申请人:Tokyo Institute of Technology
公开号:EP2537854A1
公开(公告)日:2012-12-26
The present invention aims at solving the problems of conventional methods for producing an 18F-labeled compound, that is, the problem of purification of a compound in a liquid phase synthesis method and the problem of an insufficient yield due to the reduction of reactivity in a solid phase synthesis method. There is provided a method for producing an 18F-labeled compound including: allowing a high molecular compound containing a residue of a precursor compound to be labeled and a residue of a phase transfer catalyst in the molecule thereof to react with 18F-; and removing the 18F-labeled compound from the high molecular compound.