Ligand Controlled Ir-Catalyzed Regiodivergent Oxyamination of Unactivated Alkenes
作者:Honghui Lei、John H. Conway、Caleb C. Cook、Tomislav Rovis
DOI:10.1021/jacs.9b06366
日期:2019.7.31
An intramolecular Ir(III)-catalyzed regiodivergent oxyamination of unactivated alkenes provides valuable γ-lactams, γ-lactones and δ-lactams. The regioselectivity is controlled by the electronically tunable cyclopentadienyl Ir(III)-complexes enabling oxyamination via either 5-exo or 6-endo pathways. With respect to the mechanism, we propose a highly reactive [3.1.0] bicycle intermediate derived from
A process for grafting functional organic groups onto EPM and EPDM polymers wherein the grafting reaction is carried out in the cement in which the polymer is originally formed by solution polymerization.
Di-or tripeptide renin inhibitors containing lactam conformational restrictions in ACHPA
申请人:Merck & Co., Inc.
公开号:EP0312283A2
公开(公告)日:1989-04-19
Enzyme di- or tripeptides of the formula:
and analogs thereof which inhibit renin and are useful for treating various forms of renin-associated hypertension, hyperaldosteronism and congestive heart failure; compositions containing these renin-inhibitory peptides, optionally with other antihypertensive agents; and methods of treating hypertension, hyperaldosteronism or congestive heart failure or of establishing renin as a causative factor in these problems which employ these novel peptides.