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20000-61-7

2-(3-FLUORO-PHENYL)-BENZOOXAZOLE synthesis

11synthesis methods
-

Yield:20000-61-7 86%

Reaction Conditions:

with NHC-Pd(II)-Im;lithium tert-butoxide in toluene at 130; for 24 h;Inert atmosphere;Time;

Steps:

21 A method for arylation of benzoxazole, comprising the steps of:

General procedure: Under the protection of inert gas,Benzooxazole 1a,P-toluenesulfonate 2a,Azacyclocarbene-palladium complex 4,Lithium tert-butoxide,Toluene mix,The reaction liquid was obtained by reacting at 120 ° C for 12 hours.Then the reaction solution is post-treated to obtain a product.That is, 2-arylbenzoxazole 3a is obtained, wherein:

References:

CN108658886,2018,A Location in patent:Paragraph 0058