Addition Reactions of Heterocumulenes. I. Cycloaddition Reaction of Dimethylketene with α-Diimines
نویسندگان
چکیده
منابع مشابه
PREPARATION OF (CHLOROCARBONYL) PHENYLKETENB AND ITS CYCLOADDITION REACTION WITH BENZALDEHYDEV
Meldrum's acid, 2'5-diphenyl-1'3-dioxane-4'6-dione, was produced by [2+2] cycloadditions of the (chlorocarbony1)phenylketene with benzaldehyde. Acid hydrolysis of the meldrum's acid regenerated benzaldehyde and also yielded phenylacetic acid as the final product
متن کاملGold(I)-catalyzed enantioselective cycloaddition reactions
In recent years there have been extraordinary developments of gold(I)-catalyzed enantioselective processes. This includes progress in the area of cycloaddition reactions, which are of particular interest due to their potential for the rapid construction of optically active cyclic products. In this article we will summarize some of the most remarkable examples, emphasizing reaction mechanisms an...
متن کاملReactions of a β-diketiminate zinc hydride complex with heterocumulenes.
The β-diketiminate zinc hydride MesnacnacZnH (1) reacts with CO(2), C(Ni-Pr)(2) and t-BuNCO at ambient temperature with insertion into the Zn-H bond and subsequent formation of the corresponding formato (2), formamido (3) and formamidinato (4) complexes.
متن کاملChiral copper(II) complexes as Lewis acids for catalyzed cycloaddition, carbonyl addition, and conjugate addition reactions*
Bis(oxazoline) copper(II) complexes 1±3 function as enantioselective Lewis acid catalysts for carbocyclic and hetero Diels±Alder, aldol, Michael, ene, and amination reactions with substrates capable of chelation. X-ray crystallography of the catalyst reveals a propensity for the formation of distorted square planar or square pyramidal complexes. The sense of asymmetric induction is identical fo...
متن کامل1,3-Dipolar Cycloaddition Reaction of Dibenzalaceton with Non-stabilized Azomethinylides: Synthesis of New Spirooxindolo(pyrrolizidines/ pyrrolidines)
1,3-dipolar cycloaddition reaction of 1 mol or 2 mol of dibenzalaceton with 1 mol of non-stabilized azomethinylides generated in situ by decarboxylative condensation of isatin and proline or sarcosine give the novel new spiro-oxindolo(pyrrolizidines/ pyrrolidines) instead of bis-spirooxindolo( pyrrolizidines/ pyrrolidines).
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1974
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.22.1419