619-20-5Relevant articles and documents
Palladium aminopyridine complexes catalyzed selective benzylic C-H oxidations with peracetic acid
Bryliakov, Konstantin P.,Lubov, Dmitry P.,Lyakin, Oleg Yu.,Rybalova, Tatyana V.,Samsonenko, Denis G.,Talsi, Evgenii P.
supporting information, p. 11150 - 11156 (2020/09/02)
Four palladium(ii) complexes with tripodal ligands of the tpa family (tpa = tris(2-pyridylmethyl)amine) have been synthesized and X-ray characterized. These complexes efficiently catalyze benzylic C-H oxidation of various substrates with peracetic acid, affording the corresponding ketones in high yields (up to 100%), at 1 mol% catalyst loadings. Complex [(tpa)Pd(OAc)](PF6) with the least sterically demanding ligand tpa demonstrates the highest substrate conversions and ketone selectivities. Preliminary mechanistic data provide evidence in favor of metal complex-mediated rate-limiting benzylic C-H bond cleavage by an electron-deficient oxidant.
B-Alkyl Suzuki-Miyaura cross-coupling of tri-n-alkylboranes with arylbromides bearing acidic functions under mild non-aqueous conditions
Sun, Hui-Xia,Sun, Zhi-Hua,Wang, Bing
experimental part, p. 1596 - 1599 (2009/06/18)
An efficient and chemoselective Pd-catalyzed B-alkyl Suzuki-Miyaura cross-coupling of tri-n-alkylboranes with arylbromides possessing acidic functions is described. This protocol features the relatively weak base Cs2CO3 and mild non-
COMPOUND
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Page/Page column 205-206, (2008/12/04)
The present invention provides a compound of Formula (I) or Formula (Il) wherein A is selected from CR10R11, -S(=O)2-, -NR12-,and C=O, wherein R10 and R11 independently selected from H, -OH, hydrocarbyl, -CN, -NO2, and halogens, R12 is selected from H and hydrocarbyl; B is selected from (CR13R14)1-3, C=O, CR15R16C=O, -S(=O)2-, -NR17- and -NR18-C(=O)-, wherein each of R13, R14, R15 and R16 is independently selected from H, -OH, hydrocarbyl, -CN, -NO2, and halogens, R17 and R18 are independently selected from H and hydrocarbyl; R1 is selected from OH, O-hydrocarbyl, O-heterohydrocarbyl, -SO2-hydrocarbyl, -CH=CH2, halogen, -OSO2NR19R20, -C(=O)-NR21R22, -NR23-C(=O)H and -NR35R36; wherein each of R19, R20, R21, R22, R23, R35 and R36 is independently is selected from H and hydrocarbyl; R2 is selected from H, -O-hydrocarbyl, -S-hydrocarbyl, hydrocarbyl, -CN, -NO2, and halogens, R3 is selected from Formula (A), Formula (B), Formula (C), Formula (D) wherein each of R4, R5, R6, R7 and R8 is independently selected from H, -OH, hydrocarbyl, -O-hydrocarbyl, -COOH or an ester thereof, halocarbyl, -O-halocarbyl, acyl, -O-acyl, -NR29-acyl, -O-SO2NR19R20, -NR30R31, -NR32SO2R33, -CN, -NO2, and halogens, R9 is selected from H and hydrocarbyl, and each R29 to R33 is independently selected from H and hydrocarbyl; and wherein two or more of R4, R5, R6, R7, R8 and R9 may together form a ring; wherein when R1 is OH and R3 is of Formula (D), (i) at least one of R4, R5, R6, R7 and R8 is independently selected from halocarbyl, -O-halocarbyl, -O-acyl, -NR29-acyl, -O- SO2NR19R20, -NR30R31, -NR32SO2R33, -CN, and halogens, or (ii) two or more of R4, R5, R6, R7 and R8 together form a ring, or (iii) at least three of R4, R5, R6, R7 and R8 are independently selected from -OH, hydrocarbyl, -O-hydrocarbyl, halocarbyl, -O-halocarbyl, -O-acyl, -NR29-acyl, -O-SO2NR19R20, -NR30R31, -NR32SO2R33, -CN, -NO2, and halogens; wherein h is an optional bond, wherein G is CR24R25, wherein R24 and R25 independently selected from H, -OH, hydrocarbyl, -CN, -NO2, and halogens, or wherein when h is present G is CR24, wherein R24 is selected from H, -OH, hydrocarbyl, -CN, -NO2, and halogens; n is 0, 1 or 2, each D is independently selected from O, NR26 and CR27R28, wherein each R26 is independently selected from H and hydrocarbyl; and each R27 and R28 is independently selected from H, -OH, hydrocarbyl, -CN, -NO2, and halogens.
