HUBSCH, WALTER;PFLEIDERER, WOLFGANG, HELV. CHIM. ACTA, 72,(1989) N, C. 738-743
作者:HUBSCH, WALTER、PFLEIDERER, WOLFGANG
DOI:——
日期:——
EP2948452B1
申请人:——
公开号:EP2948452B1
公开(公告)日:2017-08-09
Pteridines. Part XLI. Synthesis and properties of 6,7,8-trimethyl-4-thiolumazine
作者:Walter Hübsch、Wolfgang Pfleiderer
DOI:10.1002/hlca.19890720414
日期:1989.6.14
into the 5-position ( 9; Scheme 1). Reduction of the p-chlorophenylazo group leads to the 6-(methlyamino)-4-thiouracil-5-amine (10) which on condensation with diacetyl gives 6,7,8-trimethyl-4-thiolumazine (8). The physical properties of 8 are compared with the 2-thio analog and 6,7,8-trimethyllumazine indicating that 8 possesses the highest acidity and the longest UV absorption.