Studies on Organophosphorus Compounds: The Synthesis of [1,3,2]-Diazaphospholes and [1,3,2]-Oxaazaphospholes
摘要:
A number of spiro[cyclopentane (cyclohexane, and cycloheptane)-1,4'-perhydro-[1,3,2]diazaphosphole] derivatives (3a-c, 5a-c, 11a-c, and 12a-c) and spiro-[cyclopentane (cyclohexane, and cycloheptane)-1,4'-perhydro[1,3,2]oxaazaphos-phole] derivatives (7a-c) were prepared via an interaction of 2,4-bis-(4-methoxy-phenyl)-1,3,2,4-dithiaphosphetane-2,4-disulphide (1) with substances containing two functional groups.
Zr(HSO4)4 catalyzed one-pot strecker synthesis of α-amino nitriles from aldehydes and ketones under solvent-free conditions
作者:A. R. Hajipour、Y. Ghayeb、N. Sheikhan
DOI:10.1007/bf03246031
日期:2010.6
A mild and efficient method has been developed for the preparation of α-aminonitrilesfrom the condensation of aldehydes and ketones with aniline and TMSCN in the presence of a catalytic amount of Zr(HSO4)4 under solvent-free conditions at room temperature.
magnetically separable Lewis acid catalyst and successfully used for the one-pot synthesis of α -aminonitriles. A broad range of substrates including the aromatic and heteroaromatic aldehydes, cyclic ketones (cyclopentanone, cyclohexanone and cycloheptanone), aryl–alkyl ketones, diaryl ketones and tetralones, isatin derivatives and acenaphthenequinone were condensed with amines (aliphatic and aromatic) and trimethylsilyl
制备了Fe 3 O 4磁性纳米颗粒负载的BF 3作为新型的可磁分离的路易斯酸催化剂,并成功用于一锅法合成 α- 氨基腈。广泛的底物包括芳族和杂芳族醛,环酮(环戊酮,环己酮和环庚酮),芳基-烷基酮,二芳基酮和四氢萘酮,靛红衍生物和苯醌与胺(脂族和芳族)和三甲基甲硅烷基氰化物缩合。所有反应均在短时间内完成,并以良好至极好的收率获得了产物。该催化剂可以循环使用几次,而不会降低效率。最后, α 含腺嘌呤的-氨基腈已成功合成。
High pressure mediated three component Strecker synthesis of α-aminonitriles from ketones, aromatic amines and trimethylsilyl cyanide
High pressure (600 MPa) reaction conditions, in the absence of a catalyst, have proved to be a powerful way to stimulate the three component Strecker reaction synthesis of alpha-aminonitriles in high yields. Examples of two types of double Strecker reactions were also described. (C) 2002 Elsevier Science Ltd. All rights reserved.
Application of Secondary Amines in the Synthesis of Some New Spiro Heterocyclic Compounds
作者:A. M. Soliman、A. A. Sultan、Omran Abd Ellah、A. K. El-Shafei
DOI:10.1080/10426500802713283
日期:2010.6.30
1-Anilinocycloalkanecarbonitriles 1a-c were prepared and reacted with active methylene reagents to give compounds 5a-c through 10a-c and reacted with different other reagents such as benzaldehyde, ethyl aminoacetate, ethyl mercaptoacetate, or hydrazine carbothioamide, which afforded the desired spiro heterocycles compounds 11a-c through 14a-c.
A novel approach for the synthesis of α-aminonitriles using Mitsunobu’s reagent under solvent-free conditions
作者:Devdutt Chaturvedi、Amit K. Chaturvedi、Nisha Mishra、Virendra Mishra
DOI:10.1016/j.tetlet.2012.07.117
日期:2012.10
A highly efficient, one-pot, three-component, solvent-free protocol for the synthesis of alpha-aminonitriles starting from their corresponding carbonyl compounds, amines, using Mitsunobu's reagent has been developed. Diversity of alpha-aminonitriles has been synthesized in good to excellent yields (80-99%) using various kinds of aldehydes/ketones and a variety of amines. (C) 2012 Elsevier Ltd. All rights reserved,