Carbon Dioxide as the C1 Source for Direct C−H Functionalization of Aromatic Heterocycles
摘要:
A simple and straightforward method has been developed for the direct carboxylation of aromatic heterocylces such as oxazoles, thiazoles, and oxadiazoles using CO(2) as the C1 source. The reactions require no metal catalyst and only Cs(2)CO(3) as the base. A good functional group tolerance is achieved.
Disclosed herein are compounds of Formula (I) in which R1, R2, R3, R4, R5, A, X, Y are as described in the specification, their use in pharmaceutical compositions and in methods of treatment or prophylaxis of a melanin-concentrating hormone related disease or condition.
Disclosed herein are compounds of formula I
in which R
1
, R
2
, R
3
, R
4
, R
5
, A, X, Y are as described in the specification, their use in pharmaceutical compositions and in methods of treatment or prophylaxis of a melanin-concentrating hormone related disease or condition.