F Methanethiol

Individually indexed compounds are f Butanethiol, 1712 f 2-Butanethiol, 1713 Dodecanethiol, 3567 f Ethanethiol, 0933 f Methanethiol, 0489 f 2-Methylbutane-2-thiol, 2023 f 3-Methylbutanethiol, 2024 f 2-Methylpropanethiol, 1715 f 2-Methyl-2-propanethiol, 1716... 

Methanesulfonyl-4-nitrobenzenediazonium hydrogen sulfate, 2780 Methanetellurol, 0488 f Methanethiol, 0487... 

Several of the partially lower-alkylated derivatives of non-metal hydrides are pyrophoric in air. With other gaseous oxidants (halogens, etc.) the reaction may be explosive. The class includes the groups and the individually indexed compounds Diethylarsine, 1714 Dimethylarsine, 0933 Ethylmethylarsine, 1289 Methanetellurol, 0488 f Methanethiol, 0487 ALKYLBORANES... 

Under similar conditions, i.e. in dimethylformamide for three hours at 110 C, 6-fluoro-5/f-thia-zolo[2,3-6]quinazolin-5-one reacts with potassium methanethiolate, yielding 6-(methylsul-fanyl)-5//-thiazolo[2,3-6]quinazolin-5-onc (73% mp 186-189 C).24... 

Slagle, I.R., Balocchi, F., Gutman, D. (1978) Study of the reactions of oxygen atoms with hydrogen sulfide, methanethiol, ethanethiol and methyl sulfide. J. Phys. Chem. 82(12), 1333-1336. 

Bak F., Finster K., and Rothfuss F. (1992) Formation of dimethylsulfide and methanethiol from methoxylated aromatic compounds and inorganic sulfide by newly isolated anaerobic bacteria. Arch. Microbiol. 157, 529-534. 

Visscher P. T., Taylor B. F., and Kiene R. P. (1995) Microbial consumption of dimethyl sulfide and methanethiol in coastal marine sediments. FEMS Microbiol. Ecol. 18, 145-154. 

Challenger, F. and Lui, Y.C., 1950. Elimination of methanethiol and methyl sulfide from methyl-mercapto and dimethylsulfonium compounds by molds. Rec. Trav. Chim. 

The application of the Billups approach to l//-cyclopropa[/]phenanthrene requires dehydrochlorination and subsequent double-bond isomerization of l-chloro-la,9b-dihydro-l/7-cyclo-propa[/]phenanthrene (8). The direct double bond migration did not, however, occur in this system, but was achieved indirectly by nucleophilic trapping of the intermediate cyclopropene, la77-cyclopropa[/]phenanthrene (9) with methaneselenolate - or methanethiolate. Base-induced elimination of the dimethylselenonium or dimethylsulfonium derivative 10 did not allow isolation of the expected cycloproparene, but in the presence of furan a mixture of interception products 12-14 derived from l/f-cyclopropa[/]phenanthrene 11 and its la//-isomer 9 was obtained. 

Dimethyl-3,5-bis(methylsulfanyl)-1.2,4-triazepine undergoes addition of maleic anhydride, the intermediate then rearranges with loss of carbon dioxide, hydrogen, or methanethiol to give 2,4-dimethyl-5,7-bis(methylsulfanyl)pyrido[3,4- f]pyridazin-l(277)-one (1 20%) and 2,4-dimethyl-7-(methylsulfanyl)pyrido[3,4-ii]pyridazin-l(2/7)-one (2 40%).133... 

Furanmethanethiol,/wraH-2-met/ja/i f/u0/, (2-furyl)methanethiol, 2-furfurylthiol, furfurylmercaptan [98-02-2] FEMA 2493... 

N,N -Dimethylhydrazine in ether added at 0° during 24 hrs. to 2 moles methyldi-(methylthio)borane in the same solvent, cooled to -70°, anhydrous NHg condensed into the mixture, the temp, raised, ether and the resulting methanethiol slowly removed by distillation under reduced pressure 2,3,4,5-tetramethyl-1,3,4,2,5-triazadiborolidine. Y 72%, F. e. s. D. Nolle and H. Noth, Ang. Ch. 83, 112 (1971). 

Abramovitch and Newman (39) found that the displacement rate ratios Mes/ Meo of0.71 fof 2 fluofopyridine and 4.7 for 2-bromopyridine agree with the HSAB principle. The F/Br mobility ratios were also deduced for the methoxide ion (28.5) and for the methanethiolate (4.3). The diminished r the bromo compound is due to attractive dispersion forces between the polarizable nucleophile and the leaving group (40). 

Triphenylmethanol treated with 0.55 eqs. of Lawesson s reagent in DME at room temp, under argon for 15 h (or in toluene under reflux for ca. 10 min) triphenyl-methanethiol. Y 100%. Reaction of tert. alcohols possessing an alkyl group at the a-position led to alkene formation (especially in refluxing toluene), but thiol formation predominated at lower temp. F.e. [of sec. and tert. benzylic or allylic mercaptans] s. T. Nishio, J. Chem. Soc. Chem. Commun. 1989, 205-6. 

F. Functional groups containing sulfuF 1 —C—SH 1 thiol (also called mercaptan) CH3SH methanethiol, has the odor of rotten cabbage... 

Thiol and Disulfide Synthesis. Reaction of 2-tetrahydrofu-ranyl(thiomethyl)lithium with tert-butyldimethylchlorosilane, followed by n-BuLi and a second equivalent of t-butyldimethyl-chlorosilane followed by hydrolysis of the adduct with sil-ver(I) nitrate or mercury(II) chloride followed hy hydrogen sulfide or hydrogen chloride gives bis(f-butyldimethylsilyl)-methanethiol (t-BuMe2Si)2CHSH 91%) (eq 1). ... 

AICI3 added gradually at room temp, to a mixture of methyl methanethiol-sulfonate and excess anisole, stirred 8 hrs. 4-(methylthio)anisole. Y 85%. F. e. s. J. K. Bosscher, E. W. A. Kraak, and H. Kloosterziel, Chem. Conimun. 1971, 1365. 

Thioacylation of Alcohols and Thiols. Thiobenzoyl chloride and Bu CHg-C(S)C1 have been used to prepare various thiono- and dithio-esters, e.g. the chiral (177). Dialkyl tetrafluorobis(thiono)succinates [CFgC(S)OR]a result from alcoholysis of - -CF2C(S)F]2, whereas the ortho-thioester (178) is obtained from -t-CF2C(S)F]2 and methanethiol. ... 

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