29600-47-3Relevant articles and documents
Ruthenium-Catalyzed Enantioselective Hydrogenation/Lactonization of 2-Acylarylcarboxylates: Direct Access to Chiral 3-Substituted Phthalides
Lu, Bin,Zhao, Mengmeng,Ding, Guangni,Xie, Xiaomin,Jiang, Lili,Ratovelomanana-Vidal, Virginie,Zhang, Zhaoguo
, p. 3989 - 3996 (2017/09/13)
Highly enantioselective tandem hydrogenation/lactonization of various 2-acylarylcarboxylates including 2-aroylarylcarboxylates were realized by using [RuCl(benzene)(S)-SunPhos]Cl as the catalyst under mild reaction conditions. Excellent enantioselectivities (up to 99.6 % ee) and activities (S/C=1000) were obtained. This convenient and practical method enables a direct access to a series of highly optically pure 3-substituted phthalides that are very important molecules as valuable pharmacological compounds and diversified synthons for medicinal chemistry. Moreover, a gram-scale reaction was performed to further demonstrate the practicality of this approach.
The Synthesis of 2-(5-Phenylthiazol-4-yl)benzoic Acids
Teitei, Tsutomu
, p. 605 - 611 (2007/10/02)
The four-step synthesis of 2-(5-phenylthiazol-4-yl)benzoic acid (2a), and its 2-amino derivatives (2b), required for testing as potential plant growth regulators, is described.The α-bromo ketone (9b) was conveniently prepared from commercially available 3
