Dr. V. G. Kalalawe serves as an Associate Professor of Chemistry at Yogeshwari Mahavidyalaya, Ambajogai. With over 16 years of teaching experience at both undergraduate and postgraduate levels, he has made noteworthy contributions to the field of organic chemistry, particularly in pericyclic reactions and photochemistry key areas of focus in this book. He has published extensively in renowned national and international peer-reviewed journals and holds a registered patent for his innovative work. Currently guiding four research scholars, Dr. Kalalawe is recognized for his dedication to academic excellence, research, and mentorship, continually inspiring students and fellow academics.