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Mater Sci Nanotechnol 2017 | Volume 1 Issue 2
allied
academies
Nanomaterials and Nanochemistry
November 29-30, 2017 | Atlanta, USA
International Conference on
T
he promoterless AD (acceptorless dehydrogenation)
reaction with the release of H
2
provides promising
synthetic routes for several organic transformation such
as alcohol dehydrogenation to carbonyl compounds as
aldehydes, ketones, esters, amides, amine to imine and N-
heterocycles dehydrogenation which is synthetically very
important. Dehydrogenationof N-heterocylesweremediated
by cobalt heterogenous has been done at atmospheric
condition with the liberation of hydrogen which is most atom
efficient way to produce quinoline. Owing to the increasing
demand for environmentally benign synthetic processes,
promoterless AAD reactions are desirable. Conventionally,
oxidative dehydrogenation reaction has been performed
using stoichiometric or excess amounts of oxidants such
as DDQ, peroxides, iodates, chromium(IV) reagents and
metal oxides, that produce large excess of hazardous
waste equivalent to the oxidants which is undesirable
environmentally and economically. An alternative to these
strong and toxic oxidants is to use pressurized oxygen air
or oxygen which can cause explosion hazards. Removal of
dihydrogen atoms from adjacent atomic centers of organic
molecule is highly thermodynamically uphill process. Thus, it
would be challenging to explore the catalytic performance of
hetrogenous catalysts for the dehydrogenation of nitrogen
heterocycles. Our interest is in the development of efficient
heterogeneous catalyst containing sustainable transition
metals, such cobalt for the dehydrogenation reaction. we
have propse first cobalt based heterogenous catalytic system
for challanging catalytic dehydrogenation reactions of
nitrogen heterocycles. In this reaction only hydrogen is side
product which is good in the context of ‘hydrogen economy’
and is an effective alternative to the classical oxidation
reactions.
e:
Jaiswalgarima1@gmail.comHeterogenous graphene supported cobalt metal catalyzed dehydrogenation of N-heterocyles
Garima Jaiswal
National Chemical Laboratory, India