- Selective synthesis of spiro and dispiro compounds using Mn(III)-based oxidation of tetracarbonyl compounds
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The Mn(III)-based oxidation of methylenebis(cyclohexanedione)s and methylenebis(piperidinedione)s as a tetracarbonyl compound was investigated under various conditions, selectively producing spiro dihydrofurans and dispiro cyclopropanes depending on the solvent. The mechanism for the formation of the spiro dihydrofurans and dispiro cyclopropanes was discussed. In addition, a simple synthesis of a new type of alkaloid, 3,4,6,7,8,10-hexahydro-1H-pyrano[3,2-c:5,6-c’]dipyridine-1,9(2H)-diones, was demonstrated.
- Hisano, Kazuki,Nishikawa, Satomi,Nishino, Hiroshi,Shibuya, Keisuke,Yokote, Suzuka
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- Selective formation of spiro dihydrofurans from one-pot reaction of dimedone with BrCN and aldehydes in the presence of Et3N
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Reaction of 5,5-dimethylcyclohexane-1,3-dione (dimedone), aldehydes and cyanogen bromide in the presence of triethylamine leads to the selective formation of spiro dihydrofurans in moderate to good yields at room temperature.
- Noroozi Pesyan, Nader,Shokr, Alireza,Behroozi, Mohammad,Sahin, Ertan
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p. 565 - 575
(2013/07/27)
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- Selective formation of spiro dihydrofurans and cyclopropanes through unexpected reaction of aldehydes with 1,3-dicarbonyl compounds
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An efficient methodology for the oxidative addition reaction of various aldehydes with 5,5-dimethylcyclohexane-1,3-dione and 1,3-indandione to selectively afford spiro dihydrofuran and cyclopropane derivatives, promoted by molecular iodine and dimethylami
- Wang, Guan-Wu,Gao, Jie
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supporting information; experimental part
p. 2385 - 2388
(2009/10/10)
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- α-bromination of 1,3-dicarbonyl compounds using Dess-Martin periodinane (DMP) and tetraethylammonium bromide (TEAB)
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A mild and expeditious method for α-bromination of 1,3-dicarbonyl compounds using Dess-Martin periodinane and tetraethylammonium bromide is described. Copyright Taylor & Francis Group, LLC.
- Salgaonkar, Paresh D.,Shukla, Vidyanand G.,Akamanchi, Krishnacharya G.
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p. 275 - 280
(2007/10/03)
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