A new family of unsymmetrical β-TPA appended ‘push–pull’ porphyrins has been synthesized in good yield for the first time. They exhibited red shifted broad absorption spectral features with high dipole moments and tunable redox properties.

A new series of “Push-Pull” meso-substituted trans-A2BC porphyrins, where A = mesityl, B = phenothiazine (push) and C = o/p-nitrophenyl moiety (pull) and M = 2H, Ni(II), Cu(II), and Zn(II)...

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The burning of a huge amount of nonrenewable fossil fuel has unfavorable consequences on the environment, climate, and living beings. The application of renewable bioenergy resources is considered an eco-friendly and sustainable substitute for fossil fuels. Biomass as a renewable resource has gained tremendous attention due to its potential to produce bioenergy in the form of solid, liquid, and gaseous fuels for running internal combustion engines in transportation, industries, and heat and electricity generation. This review critically examines the potential of biomass resources, scope, and technological advances in converting biomass to bioenergy. It also discusses the challenges, opportunities, energy policies, and prospects of biomass conversion to bioenergy within global and Indian contexts. Currently, several novel physical, chemical, and biological routes are used to produce renewable bioenergy. In India, crop biomass availability is estimated at around 500 million metric tons per year and can produce energy equivalent to 18,000 megawatts. It shows a bright future in energy production in India if adequately used.

A number of isoindole (3x, 3y, 6xa-6ye), pyrrolopyrazine (3z, 6za-6ze), benzimidazoisoindole (4x, 4y, 7xa-7ye), and benzimidazopyrrolopyrazine (4z, 7za-7ze) derivatives has been synthesized in excellent yields. All these compounds were fully characterized and evaluated against five human cancer cell lines for their anti-inflammatory and antiproliferative activity. Compounds 6yc and 7zd exhibited good anti-inflammatory activity whereas compounds 6zc, 7zd (lung NCl H-522), 6ye, 7xd, 7yd, 7zc, 7zd (colon HCT-15), 6xc, 7zc (ovary PA-1), 6xc, 6yb, 6zc (liver HepG-2) exhibited good antiproliferative activity.