Catalytic vinylogous cross-coupling reactions of rhenium vinylcarbenoids
نویسندگان
چکیده
منابع مشابه
Alkylboron Cross-Coupling Reactions
The ability to append alkyl moieties onto preexisting molecular scaffolds is of significant interest owing to the breadth of the diversified compounds that can be accessed in late stage synthesis. There are a number of procedures that are capable of incorporating alkyl subunits into organic molecules; however, many of these strategies are limited in scope. In particular, the highly reactive nat...
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Simple iron salts such as FeCl(n), Fe(acac)(n) (n = 2,3) or the salen complex 4 turned out to be highly efficient, cheap, toxicologically benign, and environmentally friendly precatalysts for a host of cross-coupling reactions of alkyl or aryl Grignard reagents, zincates, or organomanganese species with aryl and heteroaryl chlorides, triflates, and even tosylates. An "inorganic Grignard reagent...
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The industrially important coupling of aromatic compounds has generally required differential prefunctionalization of the arene coupling partners with a halide and an electropositive group. Here we report that palladium, in conjunction with a copper oxidant, can catalyze the cross-coupling of N-acetylindoles and benzenes in high yield and high regioselectivity across a range of indoles without ...
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A catalytic method for the direct cross-coupling of alkenyllithium reagents with aryl and alkenyl halides is described. The use of a catalyst comprising Pd2(dba)3/XPhos allows for the stereoselective preparation of a wide variety of substituted alkenes in high yields under mild conditions. In addition (1-ethoxyvinyl)lithium can be efficiently converted into substituted vinyl ethers which, after...
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The first example of a catalytic asymmetric vinylogous Povarov reaction is presented. 1-N-Acylamino-1,3-butadienes react selectively at their terminal double bond in the presence of a chiral phosphoric acid catalyst, delivering highly enantioenriched 1,2,3,4-tetrahydroquinolines bearing a synthetically versatile enecarbamate group at the 4-position.
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ژورنال
عنوان ژورنال: Chemical Science
سال: 2018
ISSN: 2041-6520,2041-6539
DOI: 10.1039/c7sc05477g