Heterocyclic motif is an important scaffoldwhich has both industrial and pharmaceutical applications. Thesemotifs can be prepared using wide variety of reaction conditions such as the use of expensive catalyst, toxic solvent, harsh reaction condition like the use of base, high temperature, and multistep reaction. Although variousmethods are involved, the chemistry arena is now shifted towards the greener way of synthesis. Nanocatalyst constitutes an important role in the green synthesis. This is because the activity of the catalyst resides in the exposed portion of the particles. By decreasing the size of the catalyst, advantages such as more surface area would be exposed to the reactant, only negligible amount would be required to give the significant result and selectivity could be achieved, thereby, eliminating the undesired products. The current review enlists the various types of nanocatalyst involved in the heterocyclic ring formation and also some other important functionalization over the ring.

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Function of nanocatalyst in chemistry of organic compounds revolution: an overview

Significant electronic effect of porphyrin ligand on the reactivities of high-valent iron(IV) oxo porphyrin cation radical complexes

An efficient one-pot synthesis of new 2-imino-1,3-thiazolidin-4-ones under ultrasonic conditions.

Catalyst-free sonosynthesis of highly substituted propanamide derivatives in water.

Photoinitiators of polymerization with reduced environmental impact: Nature as an unlimited and renewable source of dyes

Improved synthesis of diethyl 2,6-dimethyl-4-aryl-4H-pyran-3,5-dicarboxylate under ultrasound irradiation.

Synthesis, NMR analysis and X-ray crystal structure of 6,12-bis(4-fluorophenyl)-3,9-dioxatetraasterane

Efficient Synthesis of Camphorquinone from Camphor

A new cage photodimer, tetra­ethyl 2,4,8,10-tetra­methyl-6,12-diphenyl-3,9-dioxapenta­cyclo­[6.4.0.02,7.04,11.05,10]dodecane-1,5,7,11-tetra­carboxyl­ate, C38H44O10, was prepared through [2+2]-photocyclo­addition of diethyl 2,6-dimethyl-4-phenyl-4H-pyran-3,5-dicarboxyl­ate in the solid state. The mol­ecular structure was elucidated by X-ray diffraction analysis, 1H NMR, IR and mass spectroscopy, and elemental analysis. The mol­ecule possesses a crystallographically imposed centre of symmetry. The crystal structure is stabilized by weak C—H⋯O hydrogen-bond inter­actions.

Cheng-Liang Ni

Papers

Improved synthesis of diethyl 2,6-dimethyl-4-aryl-4H-pyran-3,5-dicarboxylate under ultrasound irradiation.

Synthesis, NMR analysis and X-ray crystal structure of 6,12-bis(4-fluorophenyl)-3,9-dioxatetraasterane

Efficient Synthesis of Camphorquinone from Camphor

A photodimer of a 4-phenyl-4H-pyran