Reactions of carbethoxyalkylidenetriphenylphosphoranes with aryl azides
作者:P. Ykman、G. L'abbé、G. Smets
DOI:10.1016/s0040-4020(01)99395-0
日期:——
The title reaction has been shown to give a complex mixture of products from which triazoles (12 and 17), maleates (13), fumarates (14), triphenylphosphine oxide (15), iminophosphoranes (16) and triazenes (18) have been isolated. Their formation is rationalized by two reaction paths, involving addition of the azide onto the CC and CP bonds of the ylide. Diazoesters 5 and 19, which should result from
Reaction of Amide and Sodium Azide for the Synthesis of Acyl Azide, Urea, and Iminophosphorane
作者:Devaneyan Joseph、Sunwoo Lee
DOI:10.1021/acs.orglett.2c02429
日期:2022.8.26
in DMF at 25 °C and produce the symmetrical ureas in THF/H2O at 80 °C via the sequential reaction of acyl substitution and Curtius rearrangement. All acyl azides were also obtained from the secondary amides via sequential reaction of p-toluenesulfonyl chloride and NaN3. In addition, keto-stabilized iminophosphoranes were prepared from a one-pot reaction of amides, NaN3, and phosphines.
酰胺与 NaN 3在 25 °C 下在 DMF 中反应生成酰基叠氮化物,并在 80 °C 下通过酰基取代和 Curtius 重排的顺序反应在 THF/H 2 O 中生成对称脲。所有的酰基叠氮化物也是由仲酰胺通过对甲苯磺酰氯和NaN 3 的顺序反应得到的。此外,由酰胺、NaN 3和膦的一锅法反应制备了酮基稳定的亚氨基正膦。
Copper(I)‐Catalyzed Decarboxylative <i>N</i>‐Phosphorylation: Modular Preparation of <i>N</i>‐Acyl Iminophosphoranes Using Dioxazolones and Phosphines
作者:Jinhwan Park、Anattil Unnikrishnan Krishnapriya、Yeongmi Park、Minsuk Kim、Tyler W. Reidl、Rositha Kuniyil、Jongwoo Son
DOI:10.1002/adsc.202300693
日期:2023.12.19
Dioxazolones and phosphines have been used to access N-acyl iminophosphoranes in copper(I) catalysis under simple thermal conditions. The synthetic utility of this protocol is demonstrated by a broad range of substrates with an excellent atom-economy. The optimization process showed that copper demonstrated as catalytic amount toward the targeted transformation. Functionalization studies of N-acyl
Synthesis of N-acyl-, N-sulfonyl-, and N-phosphinylphospha(PV)azenes by a redox-condensation reaction using amides, triphenylphosphine, and diethyl azodicarboxylate
作者:Shmuel Bittner、Yonit Assaf、Penina Krief、Martin Pomerantz、Barbara T. Ziemnicka、Christina G. Smith
DOI:10.1021/jo00210a027
日期:1985.5
Froeyen, Paul, Phosphorus, Sulfur and Silicon and the Related Elements, 1993, vol. 78, # 1-4, p. 161 - 172