Allyl mercaptan

Scheme 22 Mechanism of radical chain reactions of the growth of styrene line along the edge of a dimer (left side) and of the growth of allyl mercaptan line across the dimer rows (right side) of a H-Si(l 0 0)-2 x 1 surface.

The rapid fabrication of covalently bonded ID functional molecular lines with predefined location, direction, and length provides a means to make a predesigned interconnection of molecular lines running along and across the dimer rows. Indeed, the perpendicularly connected allyl mercaptan and styrene lines or allyl mercaptan and acetone lines have been fabricated on the H-Si(l 00)-2 X 1 surface. °° 2 ... 

C3H5I 556-56-9) see Alcuronium chloride allylmagnesium bromide (CgHjBrMg 1730-25-2) see Allylestrenol Chlorprothixene Flupentixol Meglutol Orlistat allyl mercaptan... 

P-Nitrosulfides, formed by Michael addition of allyl mercaptan to P-nitroenones, undergo either INOC or ISOC to give tetrahydrothiopheno[3,4-c] isoxazolines. In this case, stereoselectivity of ISOC is also better than that of INOC (Eq. 8.88).140... 

Allyl mercaptan, p205 Allyl sulfide, d34 Allyl trichloride, t247 Aluminon, a306 A-Amidinosarcosine, c301... 

Rizpolozhenskii, N.I., Akamasin, V.D., and Eliseenkova, R.M., Reaction of acid chlorides of trivalent phosphorus acids with allyl mercaptan and allyl alcohol, Bull. Acad. Sci. U.S.S.R., 77, 1973. 

It has been suggested that DADS is actually a prodrug and the active HD AC inhibitor is its metabolite allyl mercaptan. This suggestion was reinforced when equal amounts (200 /tM) of allyl mercaptan and DADS were tested to inhibit HD AC activity in nuclear extracts of Caco-2 cells. 

In addition, another organosulfur compound, S-allyl-mercaptocysteine (Fig. 2) has been shown to affect histone acetylation levels. This again is probably due to its ability to form allyl mercaptan upon metabolic reduction of its disulfide bond. ... 

Benzyl thiol 70 was deprotonated using w-butyllithium in THF at room temperature, lithiated with DTBB (5%) at 0°C to give the benzyllithium 71 and then treated with electrophiles at temperatures ranging between —30 and 0°C. Final hydrolysis afforded the expected products 72 (Scheme 29 f. The reaction applied to allyl mercaptan failed, giving an intractable mixture of products. 

Dihydro- and tetrahydrofuroisoxazoline rings were constructed by intramolecular cycloaddition of nitrile oxides or nitrones, generated from oximes . Thus, oxime 30 and sodium hypochlorite afforded furoisoxazolines 31 (equation 14). Similarly, furanyl or thienyl oximes 32 in the presence of NaOCl afforded tricyclic products 33 in 35-90% yields (equation 15). Nitrostyrenes (ArCH=CHN02) and various nucleophiles (for example, allyl mercaptan) also generated hydroximoyl chlorides which underwent similar cycloaddition leading to bicycUc tetrahydrothiophene and tetrahydrofuran derivatives ... 

Figure 5.8. STM images of the Si(100)—(2 x 1)—H surface after hydrosilylation reaction using both styrene and allyl mercaptan, from Hossain, Kato and Kawai. The image shown in (a) contains two allyl mercaptan lines. Image (b) shows the system after a new dangling bond is generated using the STM tip. After the surface is exposed to styrene molecules, a styrene line forms which joins the two allyl mercaptan lines (c). The allyl mercaptan lines form across the Si dimer rows, while the styrene line forms along the dimer row. Figure reproduced with permission from Ref. [143]. Copyright 2005 American Chemical Society.

CH2=CH—CH2—S—CH3), in contrast to allyl mercaptan, did not show any line growth, suggesting that the presence of the -SH group in the mercaptan is important for stabihzing the intermediate radical [143,144]. 

Allyl mercaptan, p206 4-Allyl-2-methoxyphenol, m99 2-Allyl-4-methylphenol, m387 2-Allyl-6-methylphenol, m386... 

Methanethiol and other, lighter alkyl thiols are fairly common air pollutants that have ultragarlic odors both 1- and 2-butanethiol are associated with skunk odor. Gaseous methanethiol is used as an odorant leak-detecting additive for natural gas, propane, and butane it is also employed as an intermediate in pesticide synthesis. A toxic, irritating volatile liquid with a strong garlic odor, 2-propene-l-thiol (allyl mercaptan) is a typical alkenyl mercaptan. Benzenethiol (phenyl mercaptan) is the simplest of the aryl thiols. It is a toxic liquid with a severely repulsive odor. 

A typical alkenyl mercaptan is 2-propene-l-thiol, also known as allyl mercaptan. It is a volatile liquid (bp, 68°C) with a strong garlic odor. It has a high toxicity and is strongly irritating to mucous membranes when inhaled or ingested. 

Other Allyl mercaptan (= Allyl Allium sativum, A. schoenoprasum 10.7o Unpleasant (breath)... 

From the propylene reaction three principal sulfur-containing products have been found propylene episulfide, methyl vinyl mercaptan (probably propene-l-thiol), and allyl mercaptan. Rates of product formation as a function of propylene pressure are given in Table VIII. It can be seen that the two types of mercaptans are formed in nearly equal yields, while the ratio fimer pten/Repi umde again increases with pressure, but the limiting yield is only half of that obtained for ethylene. 

MVM = methylvinyl mercaptan AM = allyl mercaptan PS = propylene sulfide. In terms of ifeo - Rco. 

The allyl mercaptan formed in the propylene reaction most likely results from the paraffinic C—H insertion of S( D) atoms (28e). 

Thermolysis of thietane yields principally ethylene and thio-formaldehyde, a vibrational analysis being done on the latter derived from both protio- and perdeuteriothietane. The kinetics has been studied.Thermolysis of 2-phenylthietane proceeds similarly.A number of other products such as methane, ethane, propane, thiophene, and allyl mercaptan have been observed. 

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