Rhodium-Catalyzed Diarylation of Oxalates Using Arylboron Compounds
作者:Sawako Miyamura、Tetsuya Satoh、Masahiro Miura
DOI:10.1021/jo062628j
日期:2007.3.1
Dialkyl oxalates undergo selective diarylation on one of their carbonyl carbons upon treatment with arylboron reagents in the presence of a rhodium catalyst to give the corresponding α-hydroxydiarylacetates. Under similar conditions, the arylation of benzoylformate and benzil also proceeds efficiently.
Labeled compounds for measuring the function of the muscarinic acetylcholine nervous system
申请人:——
公开号:US20030113261A1
公开(公告)日:2003-06-19
A muscarinic acetylcholine nervous system labeled compound for positron emission tomography measurement of the present invention has a structure represented by undermentioned general formula (I):
1
[in the formula, W represents one selected from the group consisting of groups represented by undermentioned formulae (II) and (III):
2
(in the formulae, R represents one selected from the group consisting of an
11
C-labeled ethyl group and an
11
C-labeled propyl group), and in the case that W is a group represented by above-mentioned formula (II), above-mentioned formula (I) is the (+)-isomer].
LABELED COMPOUNDS FOR MEASURING THE FUNCTION OF THE MUSCARINIC ACETYLCHOLINE NERVOUS SYSTEM
申请人:HAMAMATSU PHOTONICS K. K.
公开号:EP1275645A1
公开(公告)日:2003-01-15
A muscarinic acetylcholine nervous system labeled compound for positron emission tomography measurement of the present invention has a structure represented by undermentioned general formula (I):
[in the formula, W represents one selected from the group consisting of groups represented by undermentioned formulae (II) and (III):
(in the formulae, R represents one selected from the group consisting of an 11C-labeled ethyl group and an 11C-labeled propyl group), and in the case that W is a group represented by above-mentioned formula (II), above-mentioned formula (I) is the (+)-isomer].
Solid-supported diazoalkane analogues for the smooth and clean esterifications of carboxylic acids [Eq. (1)] as well as of complex compound mixtures: the alkylating polymers presented here were synthesized as solid-supported 3-alkyl-1-aryltriazenes and are capable of releasing carbenium ions following acidic activation.