186956-36-5Relevant academic research and scientific papers
A domino synthetic approach for new, angular pyrazol- and isoxazol-heterocycles using [DBU][Ac] as an effective reaction medium
Sutariya, Tushar R.,Labana, Balvantsingh M.,Parmar, Bhagyashri D.,Parmar, Narsidas J.,Kant, Rajni,Gupta, Vivek K.
, p. 23519 - 23529 (2015)
O-Cinnamyloxy/geranyloxy/cyclohexenyloxy/cinnamoyloxy-acetophenones yielded pyrazol-heterocycles, all of which contained an angular methyl-attached pyranopyran unit with pyrazolones in the ionic liquid (IL), 1,8-diazabicyclo[5.4.0]undec-7-ene-8-ium acetat
Visible-Light-Induced External Radical-Triggered Annulation to Access CF2-Containing Benzoxepine Derivatives
Xiang, Haoyue,Zhao, Qing-Lan,Xia, Peng-Ju,Xiao, Jun-An,Ye, Zhi-Peng,Xie, Xiong,Sheng, Huan,Chen, Xiao-Qing,Yang, Hua
supporting information, p. 1363 - 1366 (2018/03/09)
A facile and diversified synthesis of functionalized CF2-containing benzoxepine derivatives via photoredox catalysis was achieved in this work. This novel protocol features broad substrate scope, mild reaction conditions, operational simplicity, easy scale-up, and versatile derivatization, which would facilitate its practical and broad applications in the construction of valuable and synthetically challenging heterocycles.
Synthesis of Allyl- and Prenylcoumarins via Microwave-Promoted Tandem Claisen Rearrangement/Wittig Olefination
Schmidt, Bernd,Riemer, Martin
supporting information, p. 141 - 149 (2015/12/26)
Allyl, dimethylallyl, crotyl, and prenyl ethers of various aromatic ortho-hydroxy carbonyl compounds undergo a tandem sequence of Claisen rearrangement, carbonyl olefination, and cyclization upon microwave irradiation in the presence of a stabilized ylide. The products are multiply substituted 6- or 8-allylated or prenylated coumarins (2H-chromen-2-ones).
Synthesis of novel 8-[2-hydroxy-3-(alkylamino)propyl]-4-methoxy coumarins
Dalal, Shailendara,Rao, Y. Jayaprakash,Krupadanam, G. L. David
, p. 805 - 810 (2015/06/30)
A series of new 8-[-2-hydroxy-3(alkylamino) propyl]-4-methoxy coumarins 7a-e, 8a-e have been synthesized from 3-allyl-2-hydroxy acetophenones 3a-e via key intermediate 8-(2-oxerane methyl)-4-methoxy coumarins 6a-e by regioselective opening of epoxide with
An easy construction of 8,12-dioxa-13- azatricyclo[8.3.1.02.7]tetradeca-2(7),3,5,13-tetraen-14-ones
De, Surya K.,Mallik, Asok K.
, p. 2389 - 2390 (2007/10/03)
8,12-Dioxa-13-azatricyclo[8.3.1.02.7]tetradeca-2(7),3,5,13-tetraen- 14-ones are obtained in moderate yield by treatment of oximes of o- allyloxyacetophenones with [hydroxy(tosyloxy)iodo]benzene in acetonitrile.
The synthesis of 8-allyl-2-styrylchromones by the modified Baker-Venkataraman transformation
Parthasarathi Reddy,David Krupadanam
, p. 1561 - 1565 (2007/10/03)
Substituted-2-hydroxy-3-allylacetophenones 2 react with cinnamoyl chlorides 3 in potassium carbonate-acetone to give good yields of polyfunctional 1-(2-hydroxy-3-allylaryl)-5-aryl-4-pentene-1,3-diones 4 which exist in their enol forms 5. These on acid cat
