Dithioles and dithiolanes

A series of papers describing detailed studies on dibromo- and diiodo-dithiadiselenafulvalene and tetraselenafulvalene derivatives has appeared including examples such as 54 06JMAC4110 , 55 06JMAC3381 , 56 and 57 06JMAC162 and 58 

Deprotection of 2,2-disubstituted-l,3-dithiolanes to give carbonyl compounds can be achieved using Oxone with KBr in aq. MeCN 06TL8559 and a review of silylated heterocycles as formyl anion equivalents includes reference to 64 06CC4881 . A method for transformation of propargylic dithiolanes 43 into tetrasubstituted furans has been reported 06SL1209 and Michael addition of enolates to the chiral dithiolane dioxide 65 takes place 

An NMR study of stereoelectronic effects in dithiolane sulfoxides such as 35 has appeared 07CEJ4273 and the new donor-acceptor system 36 has been examined for possible use in solar cells. A variety of new crystallographic studies of l,3-dithiole-2-thione structures have 

TTF in aqueous solution has been examined 07TL8430 and fabrication of thin crystals of [tetramethyltetraselenafulvalene]2+ PF6 within a confined electrode has been reported 07SM(157)492 . The synthesis, structures and electrochemistry of Cu and Co complexes of TTF-oxazolines 53 have been described 07ICA(360)233 and the crystal stmcture of the valine-derived TTF-oxazoline 54 has been determined while the corresponding phosphine 55 has proved to be an effective ligand for iridium-catalysed asymmetric hydrogenation of imines 07TA1877 . 

New catalysts for the reaction of carbonyl compounds with ethanedithiol to give 2-substituted 

62 forms a ribbon structure with Cul 05EJI233ft and an electrochemical sensor for HjPO based on 63 has been reported 05CC4777 . 

---

New applications of dithioles and dithiolanes include evaluation of compounds such as 69 and 70 as flavour components <98MI177>, 71 for antimycotic activity <99MIP33826>, 72 for antiviral activity <99CC1245>, 73 for antifungal and antibacterial activity <99MI6> and use of 74 in prevention and heatment of asthma complications <99EUP909758>. 

New applications for 1,2-dithiole and dithiolane compounds include evaluation of dithiolanes such as 84 and 85 as flavour components <98MI177>, 86 as a new indigo chromophore <99T14429>, 87 as a fungicide and insecticide <99JAP11279179>, 88 as a... 

A review on cyclic disulfides includes coverage of 1,2-dithioles and dithiolanes [94MI97], Reaction of the 1,2-dithiolane (108) with Me2S=CHR results in ring expansion to give (109)... 

---