Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Ashok K. Basak"'
Autor:
Harshita Singh Korawat, Ashok K. Basak
Publikováno v:
ACS Omega, Vol 5, Iss 28, Pp 17818-17827 (2020)
Externí odkaz:
https://doaj.org/article/4bb794f2d0df495d8c547aa11847c7bb
Publikováno v:
SynOpen, Vol 02, Iss 02, Pp 0128-0132 (2018)
Abstract 3-Cyano-4-aryl-2-iminochromenes undergo [4+3]-annulation with 1,2-diaminobenzene under mild acidic conditions to generate novel chromenobenzodiazepines in good yields. The annulation reaction was also successful with 2-aminophenol and 2-amin
Externí odkaz:
https://doaj.org/article/a4ffe3d8ddbd466b92aae1527139525b
Publikováno v:
Advanced Synthesis & Catalysis. 364:1156-1161
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3604fec1cc779fd256591a09f0faba14
https://doi.org/10.1002/adsc.202200026
https://doi.org/10.1002/adsc.202200026
Publikováno v:
Advanced Synthesis & Catalysis. 363:532-539
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90e36ca3ba8a37ea9b9e7ea3ecd29b9a
https://doi.org/10.1002/adsc.202000836
https://doi.org/10.1002/adsc.202000836
Autor:
Ashok K. Basak, Harshita Singh Korawat
Publikováno v:
ACS Omega, Vol 5, Iss 28, Pp 17818-17827 (2020)
N-Sulfonylhydrazones derived from alkyl, aryl, and heteroaryl aldehydes and ketones undergo rapid conversion into the corresponding sulfinates when heated with 10 mol % K2CO3 in N,N'-dimethylethylene urea (DMEU) at elevated temperature. The reaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7b7e4e1346b450e3b045ef5ff7c01f1
https://doaj.org/article/4bb794f2d0df495d8c547aa11847c7bb
https://doaj.org/article/4bb794f2d0df495d8c547aa11847c7bb
Publikováno v:
SynOpen, Vol 02, Iss 02, Pp 0128-0132 (2018)
3-Cyano-4-aryl-2-iminochromenes undergo [4+3]-annulation with 1,2-diaminobenzene under mild acidic conditions to generate novel chromenobenzodiazepines in good yields. The annulation reaction was also successful with 2-aminophenol and 2-aminothiophen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3841144e381c0eb7e23edec1edc393e
http://www.thieme-connect.de/DOI/DOI?10.1055/s-0036-1591573
http://www.thieme-connect.de/DOI/DOI?10.1055/s-0036-1591573
Publikováno v:
Tetrahedron Letters. 58:1727-1732
Selective dehydrogenation of 2-amino-3-cyano 4H-chromenes to the corresponding 2-iminochromenes mediated by diisopropyl azodicarboxylate under neutral conditions is reported. The dehydrogenation reaction is compatible with phenolic hydroxyl group and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec7b3fb2462a5db5bcbed449619425de
https://doi.org/10.1016/j.tetlet.2017.03.049
https://doi.org/10.1016/j.tetlet.2017.03.049
Publikováno v:
Tetrahedron Letters. 58:1132-1136
N -tosylhydrazones derived from a wide variety of aryl, alkyl and heteroaryl aldehydes undergo smooth coupling with 5,5-dimethylcyclohexane-1,3-dione under transition metal and base free conditions to generate tetraketo compounds in high yields. In p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fa06ba49356befeb3de7e1bec366b52
https://doi.org/10.1016/j.tetlet.2017.02.001
https://doi.org/10.1016/j.tetlet.2017.02.001
Publikováno v:
Tetrahedron Letters. 61:152657
3,5-Dibromopridinium trifluoromethanesulfonate catalyzes the intramolecular alkyne-carbonyl metathesis reaction of a variety of O-propargylated 2-hydroxyarylaldehydes and ketones bearing alkyl, aryl and heteroaryl substituted internal alkynes to prov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ef20df6f917044e17a0fd6d617e19d2
https://doi.org/10.1016/j.tetlet.2020.152657
https://doi.org/10.1016/j.tetlet.2020.152657
Autor:
Yogesh Joshi, Lokesh K. Soni, Mahaveer P. Dobhal, Ashok K. Basak, Debanjan Guin, H. L. Sharma, Mohini Mourya
Publikováno v:
Tetrahedron Letters. 56:7100-7104
Iodine mediated rapid conversion of 2-amino-3-cyano-4-aryl-4H chromenes to the corresponding coumarins in the presence of water is described. Several chromenes are obtained in high yields without chromatographic purification. Under anhydrous conditio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c754a74aab3b5d5609bc0ce60b999f9
https://doi.org/10.1016/j.tetlet.2015.11.019
https://doi.org/10.1016/j.tetlet.2015.11.019