T-butyl mercaptan

Scheme 5-5. Reagents and conditions a NaOCE Ph, THF/DMF 5 1, — 10°C to room temperature, b LiAlELt, Et20, reflux, c AC2O, Py. d (1) Cat. RuCh/NaKTt, CCI4/ MeCN/H20 1 1 1.5, room temperature. (2) LiOH, THF/H20 5 4, 0°C. (3) 2N HC1, Et20, 0°C to room temperature, e (1) IV-methylmorpholine, isobutylchloroformate, N-hydroxy-2-thiopyridone, THF, NEt3, TFIF, — 15°C, (2) t-butyl mercaptan, irradiation, THF, room temperature, f H2, 10% Pd/C, EtOFI. g Cat. ( -Pr)4NRu04, NMO, 4 A MS, CH2CI2, room temperature.

Other Derivatives of Isobutylene. The production of many smaller-volume chemicals is based on high-purity isobutylene. The major chemicals are para-t-butylphenol, di-t-butyl-p-cresol (butylated hydroxytoluene, BHT), 2,6-di-t-butylphenol, t-butylamine, t-butyl mercaptan, and isobutyl aluminum compounds. Isobutylene usage by each of these six ranged from 8 to 18 million lb. The total volume of isobutylene that went for small-volume chemical production was about 140 million lb in 1997. 

The N-hydroxypyridine-2-thione esters of Boc-protected amino acids undergo decarboxylation on photolysis in the presence of a hydrogen-atom-transfer reagent such as t-butyl mercaptan in 80-95% yield. Decarboxylation of the side-chain carboxy groups of suitably protected aspartic and glutamic acids can also be effected, but yields are lower (50-80%). ... 

Methyl hydrazine Methyl isobutyl ketone Methyl isobutyrate Methyl, mercaptan Methyl methacrylate 1 -Methylnaphthalene 2-Methyl-2-propanethiol, see t-Butyl mercaptan Methyl-n-Propyl ketone 1 -Methylpyrrole Methyl salicylate a-Methyl styrene m.-p-Methyl styrene Methyl sulphate, see Dimethyl sulphate... 

Sauers, R. R., Van Arnum, S. D. A Thio-Staudinger Reaction Thermolysis of a Vinyl Azide in the Presence of t-Butyl Mercaptan. Phosphorus, Sulfur Silicon Relat. Elem. 2003, 178, 2169-2181. 

Di-t-butyl disulfide 423 Isobutene, isobutane, t-butyl mercaptan, (Fe-S)... 

Beilstein Handbook Reference) BRN 0505947 EINECS 200-890-2 HSDB 1611 t-Butyl mercaptan tert-Butanethiol tert-Butyl mercaptan tert-Butylthiol tertiary-Butyl mercaptan. Has skunk-like odor. Used as additive to natural gas for leak detection. Liquid mp = -0.5° bp = 64.3° d = 0.7943 soluble in organic solvents, insoluble in H2O. Lancaster Synthesis Co. Mallinckrodt Inc. Sigma-Aldrich Fine Chem. 

Selective reduction of aldehydes. An aldehyde group can be reduced selectively in the presence of a ketone group by NaBHi in the presence of an added thiol (ethyl mercaptan, t-butyl mercaptan see 6, 532). 

The final unequivocal experimental proof that the observed effects were indeed peripheral ones was obtained in psychophysical experiments. Tertiary butyl mercaptan was used as the target in a monorhinal presentation. Its perceived odor intensity remained unchanged when in a dichorhinal experiment the contralateral na-ris was exposed to a very low Intensity of l -cyclohexyl-l -methyl-2-pentanone (CMP, 13). However, in agreement with established crossover additivity, the total perceived overall odor intensity showed a small, but statistically significant increase. Then the two separate odorant streams of the dichorhinal experiment were combined and the mixture of malodor (t.-butyl mercaptan) and AMAL (CMP) presented to the subjects again. Perceived overall intensity was reduced by and perceived malodor intensity by 85 at a significance level of 5%. 

N-Benzyldimethylamine Benzyltriethyl ammonium chloride Benzyl trimethyl ammonium chloride Bis (2-ethylhexyl) maleate Bis (glycidoxypropyl) tetramethyidisiloxane 3-[Bis (2-hydroxyethyl) amino] propyltriethoxysilane N,N -Bis (2-hydroxypropyl)-2-methylpiperazine Bis-(N-methylbenzamide) ethoxymethyl silane Bisphenol A ethoxylate diacrylate Bis-(3-(triethoxysilyl) propyl) tetrasulfane Bis (trimethoxysilylpropyl) ethylene diamine Bis (trimethylsilyl) urea 1-Butoxyethoxy-2-propanol Butoxytriglycol t-Butyl alcohol n-Butyl chloroformate n-Butyldimethylchlorosilane Butyl lactate t-Butyl mercaptan Butyl myristate t-Butyl perbenzoate Butyl sulfide Calcium undecylenate C8-10 alcohols C14-15 alcohols... 

Captan Ethyl sulfide Isopropyl mercaptan odorant, gas leak detection t-Butyl mercaptan... 

Fig. 2. Hammett equation plot of relative k. values vs.

Treatment of the o-chlorobenzylamine derivative (333) with potassium amide in liquid ammonia yields, inter alia, the isoindole (334) by benzyne cyclization. The stable fluorescent isoindole (335) is formed from phthalaldehyde, t-butyl mercaptans, and propylamine. The base-induced elimination of methanesul-phinic acid from compound (336) affords the bis-isoindole (337) the benzo[l,2-f> 4,5-c ]dipyrrole (338) has been prepared in two steps from 5,6-dibenzoyl- 1 -methylindole. ... 

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