Herein we disclose our study toward the synthesis of aryl phosphonates using either photocatalytic conditions or a photoinduced process. First, a phosphonylation reaction catalyzed by a copper complex was developed in batch, but unfortunately, it was not efficient under continuous flow. Alternatively, a photoinduced phosphonylation reaction was developed in continuous flow with a moderate efficiency. Finally, to enhance the yields observed under the continuous flow conditions for the scale-up, a complementary approach using another commercially available photoreactor was suggested to tackle the modest productivity observed in continuous flow.

Herein, we disclosed the contra-thermodynamic E! Z isomerization of alkenyl silanes, according to the in situ formation of a chromophoric species, in the presence of rac-BINAP as the catalyst. The reaction carried out in DMSO or CH 3 CN under irradiation at 405 nm allowed the interconver-sion of the E-isomers into the Z-congeners in good to excellent yields and outstanding Z/E selectivities, on 18 examples. Finally, the mechanism of this E!Z isomerization was studied to get insight into the reaction mechanism.

The catalytic asymmetric synthesis of highly functionalized cyclopropanes from α-substituted allyl sulfones and silanes is reported. The reaction, using α-aryl diazoacetates or diacceptor diazo reagents, catalyzed by a chiral rhodium complex (Rh 2 ((S)-BTPCP) 4 ), furnished the corresponding cyclopropanes in moderate to high yields (27-97 %), high diastereoselectivities (68 : 32 to 20 : 1 d.r.) and moderate to excellent ee (40-99 %). This methodology offers a privileged access to an underexplored class of enantioenriched cyclopropanes with a high level of functionality, an asset for further post-functionalization and their incorporation into more complex structure.