用途:适用于制作pH值指示剂。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | acetic acid 2-oxo-3-phenyl-2H-chromen-7-yl ester | 6296-55-5 | C17H12O4 | 280.28 |
7-羟基香豆素 | 7-hydroxy-2H-chromen-2-one | 93-35-6 | C9H6O3 | 162.145 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
7-甲氧基-3-苯基-2H-色烯-2-酮 | 3-phenyl-7-methoxycoumarin | 2555-22-8 | C16H12O3 | 252.269 |
—— | 7-(2-bromoethoxy)-3-phenyl-2H-chromen-2-one | 903854-84-2 | C17H13BrO3 | 345.192 |
—— | 7-(2-oxopropoxy)-3-phenylchromen-2-one | 195137-94-1 | C18H14O4 | 294.307 |
—— | Methyl 2-(2-oxo-3-phenylchromen-7-yl)oxyacetate | —— | C18H14O5 | 310.3 |
—— | 7-[2-(4-methylphenyl)-2-oxoethoxy]-3-phenylchromen-2-one | 827009-19-8 | C24H18O4 | 370.405 |
—— | 8-(dimethylamino)methyl-7-hydroxy-3-phenyl-2H-chromen-2-one | —— | C18H17NO3 | 295.338 |
—— | 3-((methyl-(3-((2-oxo-3-phenyl-2H-chromen-7-yl)oxy)propyl)amino)methyl)phenyl (5-phenylpentyl)carbamate | —— | C38H40N2O5 | 604.746 |
A transition-metal-free regioselective α-arylation of coumarins and 2-pyridones has been accomplished by the reaction of phenylhydrazines with coumarins or 2-pyridones.
An efficient protocol for oxidative C-3 arylation of coumarins with arylhydrazine has been developed using potassium permanganate as an oxidant. The arylated coumarins with different electronic properties were obtained in moderate to good yields. The developed protocol for direct C-3 arylation of coumarins could be extended to quinolinones.