Abstract
A copper-catalyzed acyloxylation of C(sp2)-H bond with sterically bulky benzoic acids was achieved. This protocol is compatible with a broad range of functional groups and could proceed in gram scale, providing an efficient and practical protocol for the synthesis of aryl esters.
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Chen X, Engle KM, Wang DH, Yu JQ. Palladium(II)-catalyzed C-H activation/C-C cross-coupling reactions: versatility and practicality. Angew Chem Int Ed, 2009, 48: 5094–5115
Li B, Yang S, Shi Z. Recent advances in direct arylation via palladium-catalyzed aromatic C-H activation. Synlett, 2008, 7: 949–957
Lyons TW, Sanford MS. Palladium-catalyzed ligand-directed C-H functionalization reactions. Chem Rev, 2010, 110: 1147–1169
Ackermann L. Carboxylate-assisted transition-metal-catalyzed C-H bond functionalizations: mechanism and scope. Chem Rev, 2011, 111: 1315–1345
Baudoin O. Transition metal-catalyzed arylation of unactivated C(sp3)-H bonds. Chem Soc Rev, 2011, 40: 4902–4911
Colby DA, Bergman RG, Ellman JA. Rhodium-catalyzed C-C bond formation via heteroatom-directed C-H bond activation. Chem Rev, 2010, 110: 624–655
Kulkarni AA, Daugulis O. Direct conversion of carbon-hydrogen into carbon-carbon bonds by first-row transition-metal catalysis. Synthesis, 2009, 24: 4087–4109
Liu B, Shi BF. Transition-metal-catalyzed etherification of unactivated C-H bonds. Tetrahedron Lett, 2015, 56: 15–22
Chen X, Hao XS, Goodhue CE, and Yu JQ. Cu(II)-catalyzed functionalizations of aryl C-H bonds using O2 as an oxidant. J Am Chem Soc, 2006, 128: 6790–6791
Wang WH, Luo F, Zhang SH, Cheng J. Copper(II)-catalyzed ortho-acyloxylation of the 2-arylpyridines sp2 C-H bonds with anhydrides, using O2 as terminal oxidant. J Org Chem, 2010, 75: 2415–2418
Liu Q, Wu P, Yang YH, Zeng ZQ, Liu J, Yi H, Lei AW. Room-temperature copper-catalyzed oxidation of electron-deficient arenes and heteroarenes using air. Angew Chem Int Ed, 2012, 51: 4666–4670
Liu J, Zhang X, Yi H, Liu C, Liu R, Zhang H, Zhuo K, Lei AW. Chloroacetate-promoted selective oxidation of heterobenzylic methylenes under copper catalysis. Angew Chem Int Ed, doi: 10.1002/anie.201409580
Roane J, Daugulis O. Copper-catalyzed etherification of arene C-H bonds. Org Lett, 2013, 15: 5842–5845
Hao XQ, Chen LJ, Ren B, Li LY, Yang XY, Gong JF, Niu JL, Song MP. Copper-mediated direct aroyloxylation of benzamides assisted by an N,O-bidentate directing group. Org Lett, 2014, 16: 1104–1107
Li X, Liu YH, Gu WJ, Li B, Chen FJ, and Shi BF. Copper-mediated hydroxylation of arenes and heteroarenes directed by a removable bidentate auxiliary. Org Lett, 2014, 16: 3904–3907
Wang Z, Kuninobu Y, Kanai M. Copper-mediated direct C(sp3)-H and C(sp2)-H acetoxylation. Org Lett, 2014, 16: 4790–4793
Wu XS, Zhao Y, Ge HB. Copper-promoted site-selective acyloxylation of unactivated C(sp3)-H bonds. Chem Asian J, 2014, 9: 2736–2739
Tang S, Yuan JW, Liu C, Lei AW. Direct oxidative esterification of alcohols. Dalton Trans, 2014, 43: 13460–13470
Chen FJ, Zhao S, Hu F, Chen K, Zhang Q, Zhang SQ, Shi BF. Pd(II)-catalyzed alkoxylation of unactivated C(sp3)-H and C(sp2)-H bonds using a removable directing group: efficient synthesis of alkyl ethers. Chem Sci, 2013, 4: 4187–4192
Zhang Q, Chen K, Rao WH, Zhang Y, Chen FJ, Shi BF. Stereoselective synthesis of chiral α-amino-β-lactams via Pd(II)-catalyzed sequential monoarylation/amidation of C(sp3)-H bonds. Angew Chem Int Ed, 2013, 52, 13588–1359
Long C, Zhao L, You JS, Wang MX. Copper(I)-catalyzed halogenations and acyloxylation of aryl triflates through a copper(I)/copper(III) catalytic cycle. Organometallics, 2014, 33: 1061–1067
Suess AM, Ertem MZ, Cramer CJ, Stahl SS. Divergence between organometallic and single-electron-transfer mechanisms in copper (II)-mediated aerobic C-H oxidation. J Am Chem Soc, 2013, 135: 9797–9804
Huffman LM, Stahl SS. Carbon-nitrogen bond formation involving well-defined aryl-copper(III) complexes. J Am Chem Soc, 2008, 130: 9196–9197
Wang ZL, Zhao L, Wang MX. Regiospecific functionalization of azacalixaromatics through copper-mediated aryl C-H activation and C-O bond formation. Org Lett, 2011, 13: 6560–6563
Zhang H, Yao B, Zhao L, Wang DX, Xu BQ, Wang MX. Direct synthesis of high-valent Aryl-Cu(II) and Aryl-Cu(III) compounds: mechanistic insight into arene C-H bond metalation. J Am Chem Soc, 2014, 136: 6326–6332
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Zhao, S., Chen, FJ., Liu, B. et al. Copper-catalyzed direct acyloxylation of C(sp2)-H bonds with Benzoic acids. Sci. China Chem. 58, 1302–1309 (2015). https://doi.org/10.1007/s11426-015-5376-z
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DOI: https://doi.org/10.1007/s11426-015-5376-z