Heteroleptic copper(i) complexes [Cu(dmp)(N^P)]BF₄ for photoinduced atom-transfer radical addition reactions

Abstract

Earth-abundant copper(I) coordination complexes of an imine-phosphine and a diimine have been developed as visible-light photocatalysts. Reaction of [Cu(MeCN)4]BF4 with hetero-bidentate phosphinopyrazole (phpz) ligand R1R2C3HN2PPh3 (R1 = R2 = H...

Kinetics and mechanism of halide exchange in reactions of CpRu(PPh3)2Cl with alkyl halides: evidence for radical pairs

“…Reactions between styrene and CHBr 3 , CBr 4 or CHBr 2 CO 2 Et in d 8 -toluene at 60–87 °C are catalyzed by 1% 1 and 5% AIBN. Two of the products, (1,3,3-tribromopropyl)benzene (PhCHBrCH 2 CHBr 2 ) 7 and (1,3,3,3-tetrabromopropyl)benzene (PhCHBrCH 2 CBr 3 ) 8 were identified by comparison of their 1 H NMR spectra (Fig. S2 and S3, ESI†) with literature data and spectra of authentic samples.…”

Selective copper-catalysed atom transfer radical addition (ATRA) in water under environmentally benign conditions

“…17,18 [Cu(DPA)(CH 3 CN)(ClO 4 )](ClO 4 ) ( 1a ), [Cu(ADPA)(H 2 O)(ClO 4 ) 2 ] ( 1b ), and [Cu 2 (μ-Cl) 2 (ADPA) 2 ](ClO 4 ) 2 ( 2b ) were prepared according to modified published procedures. 14,19–22 To a solution of DPA (0.20 g, 1.00 mmol), a solution of Cu(ClO 4 ) (0.56 g, 1.51 mmol) in CH 2 Cl 2 /CH 3 OH (1 : 1 v/v) was added dropwise, resulting in a color change from yellow to blue. The solution was stirred for 3 h. After that, the solvent was removed under reduced pressure.…”