Hydrolysis of Coordinated Diazoalkanes To Yield Side-On 1,2-Diazene Derivatives
摘要:
Diazoalkane complexes [Ru(eta(5)-C5Me5)(N(2)CAr1Ar2)(PPh3){P(OR)(3)}]BPh4 [R = Me (1), Et (2); Ar1 = Ar2 = Ph (a); Ar1 = Ph, Ar2 = p-tolyl (b); Ar1Ar2 = C12H8 (c)] were prepared by allowing chloro complexes RuCl(eta(5)-(CMe5)-Me-5)(PPh3)[P(OR)(3)] to react with diazoalkane Ar1Ar2CN2 in ethanol. The treatment of compounds 1 and 2 with (HO)-O-2 afforded 1,2-diazene derivatives [Ru eta(5)-C5Me5)(eta(2)-NH-NH)(PPh3){P(OR)(3)}]BPh4 (3 and 4) and ketone Ar1Ar2CO. A reaction path involving nucleophilic attack by H2O on the coordinated diazoalkane is proposed. The complexes were characterized spectroscopically (IR and NMR) and by X-ray crystal structure determination of [Ru(eta(5)-C5Me5)(eta(2)-NH-NH)(PPh3){P(OMe)(3)}]BPh4 (3).
Hydrolysis of Coordinated Diazoalkanes To Yield Side-On 1,2-Diazene Derivatives
摘要:
Diazoalkane complexes [Ru(eta(5)-C5Me5)(N(2)CAr1Ar2)(PPh3){P(OR)(3)}]BPh4 [R = Me (1), Et (2); Ar1 = Ar2 = Ph (a); Ar1 = Ph, Ar2 = p-tolyl (b); Ar1Ar2 = C12H8 (c)] were prepared by allowing chloro complexes RuCl(eta(5)-(CMe5)-Me-5)(PPh3)[P(OR)(3)] to react with diazoalkane Ar1Ar2CN2 in ethanol. The treatment of compounds 1 and 2 with (HO)-O-2 afforded 1,2-diazene derivatives [Ru eta(5)-C5Me5)(eta(2)-NH-NH)(PPh3){P(OR)(3)}]BPh4 (3 and 4) and ketone Ar1Ar2CO. A reaction path involving nucleophilic attack by H2O on the coordinated diazoalkane is proposed. The complexes were characterized spectroscopically (IR and NMR) and by X-ray crystal structure determination of [Ru(eta(5)-C5Me5)(eta(2)-NH-NH)(PPh3){P(OMe)(3)}]BPh4 (3).
preferable for expression of potent analgesicactivity, and that the free carboxyl group is superior in its analgesicactivity to that of the esterified or amidated carboxy group at the C-terminal. In addition, N-methylation of the amide bond at the 4th position contributed to improved analgesicactivity. These results indicated that the strong and long-lasting analgesic effect of ADAMB is expressed by
(1H-imidazol-1-ylmethyl) substituted benzimidazole derivatives and use
申请人:Janssen Pharmaceutica N.V.
公开号:US04859684A1
公开(公告)日:1989-08-22
Novel (1H-imidazol-1-ylmethyl) substituted benzimidazole derivatives, compositions containing the same, and methods of treating androgen dependent disorders in mammals.
Are<i>N</i>-substituted glycine<i>N</i>-thiocarboxyanhydride monomers really hard to polymerize?
作者:Xinfeng Tao、Botuo Zheng、Hans R. Kricheldorf、Jun Ling
DOI:10.1002/pola.28402
日期:2017.2.1
N‐Substituted glycine N‐thiocarboxyanhydrides (NNTAs) are promising cyclic monomers to synthesize polypeptoids with the advantages of easier preparation and higher stability during purification and storage than N‐substituted glycine N‐carboxyanhydrides (NNCAs). NNTAs were commonly considered too stable to polymerize for their low reactivity. In this contribution, we report controlled polymerizations
Process for preparing 1-substituted-1,4-benzodiazepine derivatives
申请人:Shionogi & Co., Ltd.
公开号:US04579685A1
公开(公告)日:1986-04-01
Improvement in the production of psychotropic 1-substituted-1,3-dihydro-1,4-benzodiazepin-2-ones starting from 2-(1-substituted)amino-benzophenonimines through novel intermediates of the formula: ##STR1## (wherein R is hydrogen, methyl or benzyl, R.sup.1 is C.sub.1 -C.sub.5 alkyl or phenyl-C.sub.1 -C.sub.5 alkyl, X and Y each is hydrogen or halogen and n is an integer of 1 to 2) with economical and industrial advantage.
A polyprenyl compound terminated with a group of ##STR1## is novel and useful as an antihypercholesterolemic agent and an antiarteriosclerotic agent, in which X is a group of the formula ##STR2## (wherein K and L are independently a hydrogen atom or form a single valence bond between the carbon atoms to which they are attached), a group represented by the formula --CH.sub.2 -- or a group represented by the formula --(CH.sub.2).sub.2 --, m is an integer of 0 or 1, and R stands for a hydroxy group, a group represented by the formula ##STR3## wherein R.sup.1 and R.sup.2 may be the same or different and each stands for a hydrogen atom or a lower alkyl group and p stands for an integer of 1 or 2, a group represented by the formula --NH--(CH.sub.2).sub.q --OH (wherein q denotes an integer of 1 or 2) or a group represented by the formula