- Reactions of 1,3-Dithiolane with Nucleophiles
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Reaction of benzenethiol with the 1,3-dithiolane 1,3-dioxides 3a-f gave the 1,4-dithiane 1-oxides 4-5, the α,β-unsaturated sulfoxides 6-9, the ring-opening products 10-11 and various reduction products.Addition of benzenethiol, malononitrile, diethyl malo
- Chou, Wen-Chih,Yang, Sheng-Ann,Fang, Jim-Min
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p. 603 - 610
(2007/10/02)
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- EFFICIENT SYNTHETIC METHODOLOGY FOR 1,3-DITHIOLANE-1-OXIDES via SINGLET OXIDATION OF 1,3-DITHIOLANES
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Singlet oxidation of 1,3-dithiolanes furnishes synthetically useful yields of 1,3-dithiolane 1-oxides.However, 2-ethyl-2-phenyl-1,3-dithiolane 13 gave 2-ethyl-4-hydroxy-2-phenyl-1,3-dithiolane 19 as a major product.
- Pandey, Bipin,Bai, Smita Y.,Khire, Uday R.,Rao, Ashok T.
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p. 3217 - 3218
(2007/10/02)
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- A New Route to Naphthofuran-4,9-diones from Thio-substituted 1,4-Naphthoquinones
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Reaction of 2-phenylthio- or 2-ethylthio-1,4-naphthoquinones (1) and (2) with lithium enolates or pyridinium ylides was found to give alkylated 1,4-naphthoquionones (3)-(6) in high yields.Alkylated 1,4-naphthoquinones (5) and (6) were then effectively cyclized to 2-substituted naphthofuran-4,9-diones (8) by action of bromine in acetic acid.
- Kang, Wen-Bing,Sekiya, Takashi,Toru, Takeshi,Ueno, Yoshio
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p. 441 - 445
(2007/10/02)
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- ENANTIOSELECTIVE OXIDATION OF CYCLIC DITHIOACETALS AND DITHIOKETALS
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The asymmetric oxidation of a series of dithio acetals and dithio ketals to their corresponding monosulphoxides by the procedure developed in our laboratory has been carried out.Simple 1,3-dithiolanes pr
- Furia, Fulvio Di,Licini, Giulia,Modena, Giorgio
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p. 165 - 170
(2007/10/02)
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- PHOTOSENSITIZED ELECTRON TRANSFER OXIDATION OF 2-SUBSTITUTED 1,3-DITHIOLANE TO 1,3-DITHIOLANE-1-OXIDE
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Irradation of a solution of 1,3-dithiolane, 1-cyanonaphthalene in O2-saturated CH3CN:H2O (3:1) at 350 nm furnishes good yields of 1,3-dithiolane-1-oxide.
- Pandey, Bipin,Bal, Smita Y.,Khire, Uday R.
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p. 4007 - 4008
(2007/10/02)
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- NON-STEREOSPECIFIC RING EXPANSIONS OF 5-MEMBERED HETEROCYCLIC SULFOXIDES
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Non-stereospecific ring expansion reactions of 5-membered heterocyclic sulfoxides, 1,3-benzoxathiole sulfoxides, 1,3-benzodithiole sulfoxides, and 1,3-dithiolane sulfoxides having a heteroatom at β-position to the sulfinyl group with acetic anhydride or p-toluenesulfonic acid are described together with their reaction mechanism involving a sulfonium ion intermediate.
- Ueda, Norihiro,Shimizu, Hiroshi,Kataoka, Tadashi,Hori, Mikio
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p. 757 - 760
(2007/10/02)
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