Photochemical Asymmetric Nickel‐Catalyzed Acyl Cross‐Coupling
نویسندگان
چکیده
منابع مشابه
Synthetic and photochemical studies of substituted 1-acyl-7-nitroindolines.
A previous study of substituent effects on the photo-cleavage of 1-acyl-7-nitroindolines has been extended to examine the effects of electron-donating and electron-withdrawing substituents. 1-Acetyl-4,5-methylenedioxy-7-nitroindoline was inert to 350 nm irradiation, reinforcing an earlier finding that excessive electron-donation by substituents can divert the excited state into non-productive p...
متن کاملDual wavelength asymmetric photochemical synthesis with circularly polarized light.
Asymmetric photochemical synthesis using circularly polarized (CP) light is theoretically attractive as a means of absolute asymmetric synthesis and postulated as an explanation for homochirality on Earth. Using an asymmetric photochemical synthesis of a dihydrohelicene as an example, we demonstrate the principle that two wavelengths of CP light can be used to control separate reactions. In doi...
متن کاملPhotochemical Isomerization and Topochemical Polymerization of the Programmed Asymmetric Amphiphiles
For the advancement in multi-stimuli responsive optical devices, we report the elaborate molecular engineering of the dual photo-functionalized amphiphile (abbreviated as AZ1DA) containing both a photo-isomerizable azobenzene and a photo-polymerizable diacetylene. To achieve the efficient photochemical reactions in thin solid films, the self-assembly of AZ1DA molecules into the ordered phases s...
متن کاملNew 6-oxa-2-silabicyclo[2.2.0]hexanes by photochemical conversion of acyl(allyl)(dimethyl)silanes.
Under UV irradiation in acetonitrile, acyl(allyl)silanes undergo an intramolecular (2+2) cycloaddition (Paternò-Büchi type reaction) to give unprecedented 1-alkyl-6-oxa-2-silabicyclo[2.2.0] hexanes.
متن کاملPhotochemical phase transition versus photochemical phase separation.
When a nematic liquid crystal is doped with a large amount of a liquid crystalline azobenzene compound (15 wt %), the photoisomerization of azobenzene under UV and visible light irradiation can give rise to reversible and interconvertible photochemical phase transition and photochemical phase separation. Both normal and reverse modes of photocontrolled switching of transmittance through crossed...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Angewandte Chemie
سال: 2019
ISSN: 0044-8249,1521-3757
DOI: 10.1002/ange.201910168