10166-54-8Relevant articles and documents
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Fox,van Praag
, p. 486,488 (1960)
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Catalytic oxidative carbonylation of primary and secondary α,ω-diamines to cyclic ureas
McCusker, Jennifer E.,Grasso, Cara A.,Main, Andrea D.,McEiwee-White, Lisa
, p. 961 - 964 (1999)
(matrix presented) Primary and secondary diamines can be catalytically carbonylated to cyclic ureas using W(CO)6 as the catalyst, I2 as the oxidant, and CO as the carbonyl source. Preparation of five-, six-, and seven-membered cyclic ureas from the diamines RNHCH2(CH2)nCH2NHR (n = 0-2; R = H, Me) and RNHCH2CH2NHR (R = Et, i-Pr, Bz) was achieved in moderate to good yields.
PROCESS FOR THE PRODUCTION OF CYCLIC GUANIDINE DERIVATES
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Page/Page column 10-11, (2021/04/30)
The present invention relates to a process for the production of cyclic guanidine derivates of formula I or mixtures of them (formula I) by reacting a triamine in the present of a C1-source and a solid material in the gas or liquid phase under inert atmosphere.
3-(Triflyloxy)benzynes Enable the Regiocontrolled Cycloaddition of Cyclic Ureas to Synthesize 1,4-Benzodiazepine Derivatives
Kaneko, Hideki,Ikawa, Takashi,Yamamoto, Yuta,Arulmozhiraja, Sundaram,Tokiwa, Hiroaki,Akai, Shuji
supporting information, p. 943 - 948 (2018/02/26)
A versatile synthesis of 1,4-benzodiazepine derivatives through the reaction of various 3-(trifluoromethanesulfonyloxy)benzynes with N -(p -toluenesulfonyl)imidazolidin-2-ones is reported. This reaction system provides a 1,4-benzodiazepine bearing a trifluoromethanesulfonyloxy group as a single regioisomer among the four possible regioisomers.