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Mojtahedi MM, Darvishi K, Abaee MS, Halvagar MR. Synthesis and fluorescence studies of novel bisarylmethylidene derivatives of 2-methoxy-2-methyl-1,3-dioxan-5-one. CAN J CHEM 2017. [DOI: 10.1139/cjc-2017-0099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The first general procedure is described for the synthesis of novel bisarylmethylidenes of 2-methoxy-2-methyl-1,3-dioxan-5-one 1. Thus, several derivatives of 3 are obtained rapidly in high yields by reacting 1 with different aldehydes in the presence of catalytic quantities of pyrrolidine in EtOH at room temperature. Upon completion of the reactions, products are obtained directly by spontaneous precipitation avoiding time consuming and expensive chromatographic separations. All products were characterized by proton and carbon NMR spectroscopy methods, and in one case, the proposed structure was elucidated by X-ray crystallography, confirming the Z stereochemistry for the olefinic C=C bonds. Due to showing different colours in solid and solution states, products were studied for their photophysical properties as well.
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Affiliation(s)
- Mohammad M. Mojtahedi
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
| | - Kiana Darvishi
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
| | - M. Saeed Abaee
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
| | - Mohammad R. Halvagar
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Pajohesh Blvrd., 17th km of Tehran-Karaj Highway, P.O. Box 14335-186, Tehran, Iran
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Coumbarides GS, Eames J, Weerasooriya N. The synthesis and characterization of 2-Trideuteriomethyl and 2,2-Di(trideuteriomethyl) Aryl Ketones. J Labelled Comp Radiopharm 2002. [DOI: 10.1002/jlcr.603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Kim KH, Metobo S, Jimenez LS. Annulation Reactions of Chiral Vinylsulfonium Salts with 2-Indolecarboxaldehyde. PHOSPHORUS SULFUR 2001. [DOI: 10.1080/10426500108055100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Choi S, Lewis DE. Formation of a Dimeric Camphor Derivative with an Unusually Stable 3-exo Substituent. Tetrahedron 2000. [DOI: 10.1016/s0040-4020(00)00808-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Fleming M, Basta R, Fisher PV, Mitchell S, West FG. Synthesis of Bridged Bicyclic Ethers and Fused Oxetanes from Pyran-4-ones via Tandem Solvent Trapping and Norrish Type II Cyclization(1). J Org Chem 1999; 64:1626-1629. [PMID: 11674228 DOI: 10.1021/jo9821224] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polyalkyl pyran-4-ones 1a-c were irradiated in methanol or ethanol. Although the expected solvent trapping products 3 could be observed, extended irradiation times allowed exclusive formation of secondary photoproducts 4 and 5 in combined yields of 37-64%. These bicyclic compounds are believed to arise from gamma-hydrogen abstraction by the excited enone chromophore of 3, followed by closure of the resulting biradical through one of two possible pathways. Moderate stereoselectivity was observed in the radical coupling to produce 4, whereas the analogous closure to 5 was completely diastereoselective. Tautomerization of the enol precursors to 5 also occurred with complete selectivity for protonation from the exo face. Overall, this process converts simple, planar heterocycles and alkanols into complex products in a single transformation.
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Affiliation(s)
- Mike Fleming
- Department of Chemistry, University of Utah, 315 S. 1400 East, Rm. Dock, Salt Lake City, Utah 84112-0850
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6
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Dölling W, Siebel HM. REAKTIONEN VON (±)-BICYCLO[2.2.1]HEPTAN-2-ON ((±)-NORCAMPHER) UND 8-OXATRICYCLO[5.2.1.0 2,6]DECAN MIT SCHWEFELKOHLENSTOFF. PHOSPHORUS SULFUR 1996. [DOI: 10.1080/10426509608040478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Wolfgang Dölling
- a Martin-Luther-Universität Halle-Wittenberg, Fachbereich Chemie, Instirut für Organische Chemie , Kurt-Mothes-Straße 2, 0-06120 , Halle , Saale , Deutschland
| | - Hans-Martin Siebel
- a Martin-Luther-Universität Halle-Wittenberg, Fachbereich Chemie, Instirut für Organische Chemie , Kurt-Mothes-Straße 2, 0-06120 , Halle , Saale , Deutschland
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7
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Wendt JA, Aubé J. Toward the synthesis of sparteine: Intramolecular Schmidt reactions on a norbornanone platform. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)00100-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Money T, Wong MK. The use of cyclic monoterpenoids as enantiopure starting materials in natural product synthesis. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s1572-5995(06)80054-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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