01502nas a2200229   4500008004100000022001400041245011900055210006900174260010600243300001400349490000700363520058100370653003000951653002700981653002701008653001101035653002501046100002301071700002401094700002201118856013201140       2013                        eng d  a0040-403900aN-Heterocyclic carbene catalyzed oxidative stannylation of aldehydes: a facile entry to organotin(IV) carboxylates0 aNHeterocyclic carbene catalyzed oxidative stannylation of aldehy  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcMAY  a2679-26810 v543 a<p>A simple protocol is described for the oxidative transformation of aldehydes to the corresponding organotin(IV) carboxylates in high yields (up to 90%) that utilizes atmospheric O-2 as the sole oxidant, N-heterocyclic carbene as catalyst (at 10 mol %), and tributyl tin chloride as stannylating agent. The uniqueness of the reaction lies in the direct conversion of aldehydes to the corresponding organotin(IV) carboxylates via stannylation of carboxylic acids, generated from the reaction of a Breslow intermediate with O-2. (c) 2013 Elsevier Ltd. All rights reserved.</p>10aCarboxylic acid stannanes10aN-Heterocyclic carbene10aOxidative stannylation10aoxygen10aTributyltin chloride1 aReddi, Rambabu, N.1 aMalekar, Pushpa, V.1 aSudalai, Arumugam  uhttps://library.ncl.res.in/content/n-heterocyclic-carbene-catalyzed-oxidative-stannylation-aldehydes-facile-entry-organotiniv-001257nas a2200241   4500008004100000022001400041245015100055210006900206260007500275300001000350490000600360520034400366653001400710653001300724653002100737653002800758653001100786100002300797700001900820700002400839700002200863856013000885       2016                        eng d  a2193-580700aN-heterocyclic-carbene-catalyzed regioselective oxidative ring-opening of epoxides with aromatic aldehydes: a facile entry to alpha-acyloxyketones0 aNheterocycliccarbenecatalyzed regioselective oxidative ringopeni  aPOSTFACH 101161, 69451 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcJAN  a48-510 v53 a<p>A high-yielding synthesis of -acyloxyketones using a N-heterocyclic-carbene (NHC)-catalyzed, oxidative ring-opening of epoxides with aromatic aldehydes is described. This regioselective, oxidative process utilizes a N-bromosuccinimide (NBS)/DMSO combination as the oxidant system and Et3N as the base under mild reaction conditions.</p>10aaldehydes10aepoxides10ahalogen oxidants10aN-heterocyclic carbenes10aoxygen1 aReddi, Rambabu, N.1 aGontala, Arjun1 aPrasad, Pragati, K.1 aSudalai, Arumugam  uhttps://library.ncl.res.in/content/n-heterocyclic-carbene-catalyzed-regioselective-oxidative-ring-opening-epoxides-aromatic-0