Reaction of coordinated phosphines—II

Palladacyclopentadiene Complexes with Mono‐ and Didentate Imidato Ligands: Synthesis, Hemilabile Behaviour and Catalytic Application in the Stille Reaction

“…13 C{ 1 H} NMR (67.9 MHz, CDCl 3 ): δ = 14.3 (CH 3 ), 38.6 (CH 2 ), 60.4 (CH 2 ), 122.5 (CH), 126.8 (CH), 128.8 (CH), 128.9 (CH), 137.8 (C), 147.4 (CH), 166.6 (C) ppm. These data are consistent with those previously published 23…”

Reactivity of Organocerium Compounds with Allyl Alcohols

“…All compounds were fully characterized by NMR, IR, and mass spectra. 2,2-Dimethyl-4-decene ( 4d ), 6-tetradecene ( 4e ), 1-phenyl-2-octene ( 4f ), and 1-phenyl-1-heptene ( 4i ) had physical data identical to that reported in the literature. 3-Nonene ( 4a ), 1-nonene ( 4g ), and allylbenzene ( 4h ) were recognized by comparison with commercial samples (Aldrich).…”

ortho‐Olefination of Arylaldehyde O‐Methyloximes through Palladium‐Catalyzed C–H Activation

“…However, an increase in the reaction temperature above 100°C might induce the decomposition of the substrate and therefore reduce the yield (Table 1, Entry 2). [17] To understand the catalytic process of this reaction, a kinetic isotope effect was investigated by using 2-deuteriobenzaldehyde O-methyloxime (1a-D) to react with 2a to form 3a and 3a-D (Scheme 1). in acetic acid at 80°C.…”

“…Unfortunately, almost no desired product was obtained when styrene was employed under the reaction conditions, because the acetoxylation of styrene occurred under the acidic conditions. [17] To understand the catalytic process of this reaction, a kinetic isotope effect was investigated by using 2-deuteriobenzaldehyde O-methyloxime (1a-D) to react with 2a to form 3a and 3a-D (Scheme 1). The k H /k D ratio was determined to be 0.96, [18] which indicated that the palladium(II)catalyzed C-H bond cleavage of benzaldehyde O-methyloxime (1a) does not occur in the rate-determining step.…”