80586-92-1Relevant articles and documents
Catalytic Asymmetric Dearomatization by Visible-Light-Activated [2+2] Photocycloaddition
Hu, Naifu,Jung, Hoimin,Zheng, Yu,Lee, Juhyeong,Zhang, Lilu,Ullah, Zakir,Xie, Xiulan,Harms, Klaus,Baik, Mu-Hyun,Meggers, Eric
supporting information, p. 6242 - 6246 (2018/05/03)
A novel method for the catalytic asymmetric dearomatization by visible-light-activated [2+2] photocycloaddition with benzofurans and one example of a benzothiophene is reported, thereby providing chiral tricyclic structures with up to four stereocenters including quaternary stereocenters. The benzofurans and the benzothiophene are functionalized at the 2-position with a chelating N-acylpyrazole moiety which permits the coordination of a visible-light-activatable chiral-at-rhodium Lewis acid catalyst. Computational molecular modeling revealed the origin of the unusual regioselectivity and identified the heteroatom in the heterocycle to be key for the regiocontrol.
Hypervalent Iodine(III)-Mediated Oxidative Fluorination of Alkylsilanes by Fluoride Ions
Xu, Peng,Wang, Feng,Fan, Guilan,Xu, Xiufang,Tang, Pingping
supporting information, p. 1101 - 1104 (2017/01/18)
The first example of a hypervalent iodine(III)-mediated oxidative fluorination of alkylsilanes by fluoride ions without the use of transition metals is demonstrated. This reaction is operationally simple, scalable, and proceeds under mild reaction conditions. Mechanistic studies suggest the involvement of a single-electron transfer resulting from the interaction of an organopentafluorosilicate and aryliodonium difluoride, which were generated in situ from the corresponding alkylsilane and iodosobenzene, respectively, in the presence of fluoride ions.
PERFUMING INGREDIENTS OF THE FLORAL AND/OR ANIS TYPE
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Page/Page column 6, (2011/10/10)
The present invention concerns the use as perfuming ingredient, for instance to impart odor notes of the floral and/or green type, of a compound of formula 5 wherein R is an ortho, meta or para substituent of the phenyl, and represents a hydrogen atom or a C 1-2 alkyl or alkoxyl group; R 1 represents a hydrogen atom or a methyl or ethyl group; 10 R 2 represents a hydrogen atom or a C 1-3 alkyl group; and X represents a CHO, COOR 3, CH(OR 4) 2 or CN group, R 3 being a methyl or ethyl group, and R 4, taken seperately, being a methyl or ethyl group, or said R 4, taken together, a C 2-5 alkanediyl group; and at least one of said R, R 1 or R 2 represents a group containing at least one carbon atom.