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Shen J, Xiao B, Hou Y, Wang X, Li G, Chen J, Wang W, Cheng J, Yang B, Yang S. Cobalt(II)‐Catalyzed Bisfunctionalization of Alkenes with Diarylphosphine Oxide and Peroxide. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900873] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jian Shen
- College of Chemistry and Chemical EngineeringYantai University Yantai 264005 People's Republic of China
| | - Bo Xiao
- College of Chemistry and Chemical EngineeringYantai University Yantai 264005 People's Republic of China
| | - Yang Hou
- College of Chemistry and Chemical EngineeringYantai University Yantai 264005 People's Republic of China
| | - Xue Wang
- College of Chemistry and Chemical EngineeringYantai University Yantai 264005 People's Republic of China
| | - Gui‐Zhi Li
- College of Chemistry and Chemical EngineeringYantai University Yantai 264005 People's Republic of China
| | - Jin‐Chun Chen
- College of Chemistry and Chemical EngineeringYantai University Yantai 264005 People's Republic of China
| | - Wei‐Li Wang
- School of Chemistry and Material ScienceLudong University Yantai 264025, People's Republic of China
| | - Jian‐Bo Cheng
- College of Chemistry and Chemical EngineeringYantai University Yantai 264005 People's Republic of China
| | - Bin Yang
- College of Chemistry and Chemical EngineeringYantai University Yantai 264005 People's Republic of China
| | - Shang‐Dong Yang
- State Key Laboratory of Applied Organic ChemistryLanzhou University Lanzhou 730000 People's Republic China
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Macías MA, Pandolfi E, Schapiro V, Silveira GP, Vilela GD, Suescun L. Crystal structure and absolute configuration of (3a R,3'a R,7a S,7'a S)-2,2,2',2'-tetra-methyl-3a,6,7,7a,3'a,6',7',7'a-octa-hydro-4,4'-bi[1,3-benzodioxol-yl], obtained from a Pd-catalyzed homocoupling reaction. Acta Crystallogr E Crystallogr Commun 2017; 73:81-84. [PMID: 28083142 PMCID: PMC5209778 DOI: 10.1107/s2056989016019927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 12/14/2016] [Indexed: 11/28/2022]
Abstract
The absolute configuration, i.e. (3aR,3'aR,7aS,7'aS), of the title compound, C18H26O4, synthesized via a palladium-catalyzed homocoupling reaction, was determined on the basis of the synthetic pathway and was confirmed by X-ray diffraction. The homocoupled mol-ecule is formed by two chemically identical moieties built up from two five- and six-membered fused rings. The supra-molecular assembly is controlled mainly by C-H⋯O inter-actions that lead to the formation of hydrogen-bonded chains of mol-ecules along the [001] direction, while weak dipolar inter-actions and van der Waals forces hold the chains together in the crystal structure.
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Affiliation(s)
- Mario A. Macías
- Departamento de Química, Universidad de los Andes, Carrera 1 No 18A-12, Bogotá, Colombia
| | - Enrique Pandolfi
- Departamento de Química Orgánica, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Valeria Schapiro
- Departamento de Química Orgánica, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Gustavo P. Silveira
- Departamento de Química Orgánica, Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, 91501-970, Brazil
| | - Guilherme D. Vilela
- Departamento de Química Orgánica, Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, 91501-970, Brazil
| | - Leopoldo Suescun
- Cryssmat-Lab/Cátedra de Física/DETEMA, Universidad de la República, Montevideo, Uruguay
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Boyd DR, Sharma ND, Kaik M, McIntyre PBA, Malone JF, Stevenson PJ. Reactions of enantiopure cyclic diols with sulfuryl chloride. Org Biomol Chem 2014; 12:2128-36. [PMID: 24569926 DOI: 10.1039/c4ob00042k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Monocyclic allylic cis-1,2-diols reacted with sulfuryl chloride at 0 °C in a regio- and stereo-selective manner to give 2-chloro-1-sulfochloridates, which were hydrolysed to yield the corresponding trans-1,2-chlorohydrins. At -78 °C, with very slow addition of sulfuryl chloride, cyclic sulfates were formed in good yields, proved to be very reactive with nucleophiles and rapidly decomposed on attempted storage. Reaction of a cyclic sulfate with sodium azide yielded a trans-azidohydrin without evidence of allylic rearrangement occurring. An enantiopure bicyclic cis-1,2-diol reacted with sulfuryl chloride to give, exclusively, a trans-1,2-dichloride enantiomer with retention of configuration at the benzylic centre and inversion at the non-benzylic centre; a mechanism is presented to rationalise the observation.
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Affiliation(s)
- Derek R Boyd
- School of Chemistry and Chemical Engineering, Queens University, Belfast, N Ireland BT9 5AG, UK.
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Boyd DR, Sharma ND, Belhocine T, Malone JF, McGregor ST, Atchison J, McIntyre PAB, Stevenson PJ. Reactions of nitrogen nucleophiles with enantiopure cyclohexenyl electrophiles: a stereo- and regio- selective study. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3183] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Derek R. Boyd
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Narain D. Sharma
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Tayeb Belhocine
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - John F. Malone
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Stuart T. McGregor
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Jordan Atchison
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Peter A. B. McIntyre
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Paul J. Stevenson
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
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Semak V, Metcalf TA, Endoma-Arias MAA, Mach P, Hudlicky T. Toluene dioxygenase mediated oxidation of halogen-substituted benzoate esters. Org Biomol Chem 2012; 10:4407-16. [PMID: 22562668 DOI: 10.1039/c2ob25202c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of ortho-, meta-, and para- halogen-substituted methyl benzoate esters was subjected to enzymatic dihydroxylation via the whole-cell fermentation with E. coli JM109 (pDTG601A). Only ortho-substituted benzoates were metabolized. Methyl 2-fluorobenzoate yielded one diol regioselectively whereas methyl 2-chloro-, methyl 2-bromo- and methyl 2-iodobenzoates each yielded a mixture of regioisomers. Absolute stereochemistry was determined for all new metabolites. Computational analysis of these results and a possible rationale for the regioselectivity of the enzymatic dihydroxylation is advanced.
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Affiliation(s)
- Vladislav Semak
- Department of Chemistry, Brock University, 500 Glenridge Ave, St. Catharines, ON, Canada L2S 3A1
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Boyd DR, Bell M, Dunne KS, Kelly B, Stevenson PJ, Malone JF, Allen CCR. Chemoenzymatic synthesis of a mixed phosphine–phosphine oxide catalyst and its application to asymmetric allylation of aldehydes and hydrogenation of alkenes. Org Biomol Chem 2012; 10:1388-95. [DOI: 10.1039/c1ob06599h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Boyd DR, Sharma ND, Kaik M, McIntyre PBA, Stevenson PJ, Allen CCR. Chemoenzymatic formal synthesis of (−)- and (+)-epibatidine. Org Biomol Chem 2012; 10:2774-9. [DOI: 10.1039/c2ob06904k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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