7421-77-4Relevant articles and documents
Highly diastereoselective spiro-cyclopropanation of 2-arylidene-1,3-indanediones and dimethylsulfonium ylides
Huang, Jie,Lee, Kevin,Ma, Ping,Sun, Shaofa,Wang, Gangqiang,Wang, Jian,Wu, Yang,Xing, Yalan
supporting information, p. 18776 - 18780 (2021/10/26)
A highly diastereoselective spiro-cyclopropanation reaction of 2-arylidene-1,3-indanediones and dimethylsulfonium ylides has been developedviabase-induced annulation. This efficient and simple protocol features simple operations, mild conditions and excellent functional group compatibility. A variety of structurally interesting spiro-cyclopropanes were prepared in excellent yields and diastereomeric ratios (up to 97% yield and 20?:?1 dr). Also, ring expansion of the cyclopropanation product to quickly deliver a complex indeno[1,2-c]pyridazine structure showcased an interesting application of this method.
Direct β-acylation of 2-arylidene-1,3-indandiones with acyl chlorides catalyzed by organophosphanes
Lee, Chia-Jui,Sheu, Chia-Ning,Tsai, Cheng-Che,Wu, Zong-Ze,Lin, Wenwei
supporting information, p. 5304 - 5306 (2014/05/06)
We have developed an organophosphane-catalyzed direct β-acylation of a series of conjugated systems bearing ketone, amide and ester functionalities using acyl chlorides as trapping reagents. A wide variety of highly functional ketone derivatives were gene
Use of Functionalised Ynamines in a Hetero-Diels-Alder Approach to Dihydronaphtholpyrans and Indenopyrans
Bloxham, Jason,Dell, Colin P.
, p. 3055 - 3060 (2007/10/02)
Reaction of the ynamine ester methyl 3-(pyrrolidin-1-yl)prop-2-ynoate 5 with 2-(4-nitrobenzylidene)-1-tetralone 1 results in a very poor yield of the chromatographically labile 4-aryl-5,6-dihydro-4H-naphtholpyran 8 along with the α-pyrone 10.Increa
