A process to make 6-phenyl-4H-s-triazolo[4,3-a][1,4]-benzodiazepines by converting 2-[3-(hydroxymethyl)-4H-1,2,4-triazol-4-yl]benzophenones to 2-[3-[(phthalimido or methanesulfonyl)methyl]-4H-1,2,4-triazol-4-yl]benzophenones and converting these compounds to the highly active 6-phenyl-4H-s-triazolo[4,3-a][1,4]benzodiazepines useful as tranquilizers and sedatives.
<i>N,N ′</i>-Diiodo-<i>N,N′</i>-1,2-ethanediylbis<i>(p</i>-toluenesulfonamide) as an Efficient Catalyst for Acetylation of Alcohols, Phenols, Amines, and Thiols Under Solvent-Free Conditions
作者:Ramin Ghorbani-Vaghei、Zahra Toghraei-Semiromi
DOI:10.1080/10426500903241721
日期:2010.7.30
N,N′-Diiodo-N,N′-1,2-ethanediylbis(p-toluenesulfonamide) (NIBTS) is a highly efficientcatalyst for the acetylation of alcohols, phenols, amines, and thiols undersolvent-freeconditions. Primary, secondary, tertiary alcohols; phenols; amines; and thiols can be easily acetylated in good to excellent yields at 80 °C.
N,N'-Diiodo-N,N'-1,2-乙二基双(对甲苯磺酰胺)(NIBTS)是一种在无溶剂条件下用于醇、酚、胺和硫醇乙酰化的高效催化剂。伯、仲、叔醇;酚类;胺类;硫醇可以很容易地乙酰化,在 80 °C 下收率非常好。