作者:Peter J. S. S. van Eijk、Cor Overkempe、Willem P. Trompenaars、David N. Reinhoudt、Lauri M. Manninen、Gerrit J. van Hummel、Sybolt Harkema
DOI:10.1002/recl.19881070202
日期:——
yield the trans four-membered cyclic nitrones 12–13 upon reaction with 6. Nitroalkene 4i reacts with 6c to give a 1:1 mixture of the cis and trans four-membered cyclic nitrones 9g and 13i. The trans stereochemistry of trans-N,N-diethyl-2, 3-dihydro-3-(2-methoxynaphthalenyl)-2-methyl-4-phenyl-2-azetecarboxamide 1-oxide (13k) was elucidated by means of X-ray analysis. Only from the reaction of 1-nitrocyclopentene
phosphaalkenes with inverse electron density - react primarily at the three-membered ring with nucleophilic reagents. From their reactions with organolithium compounds 2a-c and Grignardreagents 5a,b the cyclopropenylphosphines 4a-f are obtained after addition of chlorotrimethylsilane; of these products only 4a, d, and e were isolated and characterized. Methanolysis of products 4a-f yields the primary (7a-d) and
Reaktionen von carbonylcyclopentadienylhydriden von molybdän und wolfram mit α-aminoacetylenen.II
作者:Harald Brix、Wolfgang Beck
DOI:10.1016/s0022-328x(00)85852-0
日期:1982.8
Insertion of α-aminoacetylenes R1CCNR22 into the metal hydrogen bond of the complexes (η5-L)(η1-L)(CO)2MH (M Mo,W; η5-L C5H5, MeC5H4, indenyl; η1-L CO, phosphite) gives η1-aminovinyl complexes (III) which could be iso lated with η1-L phosphite. CO insertion into the metalvinyl bond yields the η3-acryloyl complexes (IV), which isomerize at higher temperatures for M W and R1 Me, Me3Si;
[EN] SACCHARIN DERIVATIVES AS ORALLY ACTIVE ELASTASE INHIBITORS<br/>[FR] DERIVES DE SACCHARINE SERVANT D'INHIBITEURS D'ELASTASE ORALEMENT ACTIFS
申请人:SANOFI SYNTHELABO
公开号:WO2001044245A1
公开(公告)日:2001-06-21
Orally active compounds of general formula (I) wherein R1 is methyl, ethyl or 2-morpholino-ethyl group, R2 is piperidino, morpholino or 4-methyl-piperazinyl group, n is 2 or 3 and their salts, solvates and hydrates.