Synthesis of α-Aryldiazophosphonates <i>via</i> a Diazo Transfer Reaction
作者:Irina P. Beletskaya、Igor D. Titanyuk
DOI:10.1021/acs.joc.1c02673
日期:2022.3.4
The simple synthetic procedure for preparation of α-aryl-α-diazophosphonates via a diazotransferreaction is proposed. Benzylphosphonates reacted with tosyl azide (TsN3) in the presence of potassium tert-butoxide (KOtBu) to afford diazophosphonates in a yield up to 79%. The proposed method is general. The reaction uses easily available starting materials, tolerates various functional groups, and may
提出了通过重氮转移反应制备α-芳基-α-重氮膦酸盐的简单合成方法。在叔丁醇钾 (KO t Bu)的存在下,膦酸苄酯与叠氮化甲苯磺酰 (TsN 3 ) 反应得到重氮膦酸酯,产率高达 79%。建议的方法是通用的。该反应使用容易获得的起始材料,耐受各种官能团,可用于数克规模的合成。
Pevzner, L. M.; Ignat'ev, V. M.; Ionin, B. I., Russian Journal of General Chemistry, 1994, vol. 64, # 12.1, p. 1754 - 1763
作者:Pevzner, L. M.、Ignat'ev, V. M.、Ionin, B. I.
DOI:——
日期:——
KASHIHARA, HIROSHI;SUEMUNE, HIROSHI;TSUNEHIRO, NAOMI;SAKAI, KIYOSHI, CHEM. AND PHARM. BULL., 38,(1990) N, C. 2581-2582
The enones (II), which were obtained from dimethyl 4, 5-isopropylidenedioxy-2-oxopentylphosphonate (Ia) and various aldehydes, were easily converted to 2-alkenylfurans (III) by treatment with p-TsOH in MeOH. In a similar manner, the furfuryl phosphonate (IVa) and the 3-methylfurfuryl phosphonate (IVb) were obtained from Ia and its 3-methylated analogue (Ib), respectively.