Deoxycyanamidation of Alcohols with N-Cyano-N-phenyl-p-methylbenzenesulfonamide (NCTS)
摘要:
The first one-pot deoxftyanamidation,of alcohols has been developed using N-cyano-N-phenyl-p-methylbenzenesulfonamide (NCTS) as both a sulfonyl transfer reagent and a cyanamide source, accessing a diveite range of tertiary,cyanamides in excellent isolated yields. ThiS approach exploits the underdeveloped desulfonylative (N-S bond cleavage) reactivity pathway of NCTS, which is more Commonly employed for electrophilic C- and N-cyanation processes.
Synthesis of Cyanamides via a One-Pot Oxidation–Cyanation of Primary and Secondary Amines
作者:Nadine Kuhl、Saurin Raval、Ryan D. Cohen
DOI:10.1021/acs.orglett.8b04007
日期:2019.3.1
operationally simple oxidation–cyanation method for the synthesis of cyanamides is described. The procedure utilizes inexpensive and commercially available N-chlorosuccinimide and Zn(CN)2 as reagents to avoid direct handling of toxic cyanogen halides. It is demonstrated to be amenable for the cyanation of a variety of primary and secondary amines and aniline derivatives as well as a complex synthetic
A Simple Method for the Electrophilic Cyanation of Secondary Amines
作者:Chen Zhu、Ji-Bao Xia、Chuo Chen
DOI:10.1021/ol403245r
日期:2014.1.3
Bleach oxidizes trimethylsilyl cyanide to generate an electrophilic cyanating reagent that readily reacts with an amine nucleophile. This oxidative N-cyanation reaction allows for the preparation of disubstituted cyanamides from amines without using highly toxic cyanogen halides.
polymeric support was prepared by the functionalization of the 4‐(benzyloxy)benzyl chloride polymer with 5‐phenyl‐1‐H‐tetrazole and the subsequent complexation with PdCl2. Then, it was characterized with different methods and used as catalyst in the green benzylation reaction of various aryl cyanamides with benzyl bromide and K2CO3 in EtOH at 60°C for the appropriate times. Also, the antibacterial properties
固定在官能化聚合物载体上的Pd配合物是通过4-(苄氧基)苄基氯聚合物与5-苯基-1- H-四唑的官能化反应以及随后与PdCl 2的络合制备的。然后,用不同的方法对其进行表征,并将其用作催化剂,在60℃下于EtOH中将各种芳基氰酰胺与苄基溴和K 2 CO 3进行绿色苄基化反应。此外,还研究了Pd聚合物支持的复合物对多种革兰氏阳性和革兰氏阴性细菌的抗菌性能,在某些情况下,其抗苏云金芽孢杆菌的四环素标准抗生素(革兰氏阳性)具有相同的作用。细菌)和粘质沙雷氏菌(革兰氏阴性细菌)。
A novel tetrazole functionalized polymer-supported palladium nano-catalyst for the synthesis of various N-benzylated arylcyanamides
作者:Davood Habibi、Somayyeh Heydari、Alireza Faraji
DOI:10.1016/j.jallcom.2018.05.271
日期:2018.9
(BBC-Polym) was functionalized with 1-phenyl-1H-tetrazole-5-thiol (PTT), and the corresponding novel nano-particle Pd catalyst prepared by the subsequent addition of PdCl2 (BBC-Polym@PTT@Pd). The Pd catalyst was characterized using powder XRD, SEM, EDX, ICP, TGA-DTA, and FT-IR spectroscopy. Then, the Pd catalyst was used as an efficient heterogeneous catalyst for the synthesis of various N-benzylated
A catalyst-free and expeditious general synthesis of N-benzyl-N-arylcyanamides under ultrasound irradiation at room temperature
作者:Mahmoud Nasrollahzadeh、Mohaddeseh Sajjadi、Rajender S. Varma
DOI:10.1016/j.ultsonch.2019.04.038
日期:2019.9
the efficient synthesis of N-benzyl-N-arylcyanamides is described via N-benzylation of a variety of arylcyanamides with benzyl bromide underultrasoundirradiation condition at room temperature; assorted N-benzyl-N-arylcyanamides are expeditiously accessible in excellent yields. The salient features of this approach include a very simple and clean reaction, higher yields obtained under mild conditions