Selective synthesis of three different bioactive heterocycles; isoxazolines, 5‐hydroxy‐2‐isoxazolines and isoxazoles from the same starting material using TEMPO (2,2,6,6‐Tetramethylpiperidin‐1‐oxyl) as a radical initiator is reported. Selectivity was achieved using different oxidants with TEMPO. The reaction goes through a 1,5‐HAT (hydrogen atom transfer) process resulting in products with good yields. This strategy offers a straightforward route to three different heterocycles from oximes via radical‐mediated C(sp3)‐H oxidation.
An appraisal of butterfly species diversity was carried out in the suburban town of Bongaon, southern West Bengal, India whose butterfly faunal diversity remained undocumented. A total of 76 species of butterflies were recorded from October 2018 to October 2019. The highest number of butterflies were recorded belonging to the family Nymphalidae (27 species), followed by Lycaenidae (21 species), Hesperiidae (13 species), Pieridae (8 species) and Papilionidae (7 species). Among the 76 butterfly species that have been recorded, nine species come under the protection category as per the Indian Wildlife (Protection) Act, 1972. Over the study period, 54 species of larval host plants were also documented. This communication will be the first comprehensive work on butterflies of Bongaon town and serve as baseline data for future research on the butterfly.
Prosotas pia is reported from Jayanti riverbed (26.747066 N, 89.636343 E). Therefore, this note reports a new finding of this butterfly, being incorporated to the existing West Bengal lepidoptera list with a photographic record from the Buxa Tiger Reserve, West Bengal, India.
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