Reduction of isopropylidene acylmalonates, 5-acylbarbituric acids, and 3-acyl-4-hydroxycoumarins to the corresponding alkyl derivatives by sodium cyanoborohydride-acetic acid
作者:Oleg V. Bityukov、Andrey S. Kirillov、Pavel Yu. Serdyuchenko、Maria A. Kuznetsova、Valentina N. Demidova、Vera A. Vil’、Alexander O. Terent'ev
DOI:10.1039/d2ob00343k
日期:——
The electrochemical thiocyanation of barbituricacids with NH4SCN was disclosed in an undivided cell under constant current conditions. The electrosynthesis is the most efficient at a record high current density (janode ≈50–70 mA cm−2). NH4SCN has a dual role as the source of the SCN group and as the electrolyte. Electrochemical thiocyanation of barbituricacids starts with the generation of (SCN)2
巴比妥酸与 NH 4 SCN 的电化学硫氰化反应在恒流条件下的未分隔电池中进行了公开。在创纪录的高电流密度( j阳极≈50–70 mA cm -2)下,电合成效率最高。NH 4 SCN 作为SCN基团的来源和作为电解质具有双重作用。巴比妥酸的电化学硫氰化反应始于 (SCN) 2的生成来自硫氰酸根阴离子。将硫氰加成到巴比妥酸的烯醇互变异构体的双键上,得到硫氰化巴比妥酸。各种具有不同官能团的硫氰化巴比妥酸以 18-95% 的收率获得,并显示出有希望的抗真菌活性。
US2446503
申请人:——
公开号:——
公开(公告)日:——
Dox, Journal of the American Chemical Society, 1924, vol. 46, p. 1709
作者:Dox
DOI:——
日期:——
Wenner, Festschrift E. Barell <Basel 1946> S. 435, 440, 443
作者:Wenner
DOI:——
日期:——
NUTAITIS C. F.; SCHULTZ R. A.; OBAZA J.; SMITH F. X., J. ORG. CHEM., 1980, 45, NO 23, 4606-4608
作者:NUTAITIS C. F.、 SCHULTZ R. A.、 OBAZA J.、 SMITH F. X.