Tert.-Butyl-methyl- -chlorid

Butyl-(methoxy-methoxycarbonyl-methyl)- -ethylester E2, 206 Butyl-methyl- XII/1, 228 tert.-Butyl-methyl- -chlorid-(2,2-dimethyl-hydrazonid) E2, 288 Butyl-methyl- -pentylester XII/1, 261 tert.-Butyl-(4-mcthyl-phcnyl)- -anhydrid E2, 174 terl.-Butyl-(4-melhyl-phenyl)- -chlorid E2, 154 (Butyloxycarbonyl-hydroxy-methyl)-ethyl- -propyl-cstcr E2, 186... 

FIGURE 6.33 Data for structure H hydrates of methane with isopentane, neohexane, 2,3-dimethylbutane, and sodium chloride inhibition of hydrates of methane with isopentane, neohexane, and tert-butyl methyl ether. 

See Sulfinyl chloride tert-Butyl methyl ether Sulfuric acid... 

Bromo-l-(4-fluorophenyl)-l-(3-dimethylaminopropyl)-l,3-dihydroisobenzofuran Magnesium Butyl lithium tert-Butyl methyl ether Isopropylmagnesium chloride Thionyl chloride Sulfamide Dry ice... 

R = CH3/C(CH3)3 R2 = CH3 tert.-Butyl-methyl-phosphinsiiure-chlorid-(2,2-dimethyl-hydrazonid) 1084 66%... 

Hexane. 3500—1300 cm. Thin film 2-Methylpentane. 3500—1300 cm . Thin film Dec-l-ene. 3500—1300 cm. Thin film /rfl 5-Stilbene. 1300—400 cm". KBr disc Styrene. 3500—1300 cm". Thin film Styrene 1300—400 cm". Thin film Phenyl Acetylene. 3500—1300 cm". Thin film Phenyl Acetylene. 1300—400 cm". Thin film Aromatic substitution patterns. 2000—1600 cm" para-Cresol. 3500—1300 cm". I.M. CCI4 solution tert-Butyl methyl ketone. 4000—650 cm". Thin film -Heptaldehyde. 4000—650 cm". Thin film Di-/sopropyl ether. 4000—650 cm". Thin film Acetic Anhydride. 4000—650 cm". Thin film Propionic acid. 4000—650 cm". Thin film Propionic acid. 3500—2000 cm". Solution 0.005M CCI4 Methyl salicylate. 4000—650 cm . Thin film n-Butylamine. 4000—650 cm". Thin film Benzamide. 3500—1300 cm". KBr disc Methionine. 4000—650 cm". KBr disc Benzonitrile. 3500—1300 cm". Thin film Benzonitrile. 1300—400 cm". Thin film A-Methyl acetamide. 3500—650 cm". Thin film Methyl acrylate. 4000—650 cm". Thin film Benzoyl chloride. 4000—650 cm". Thin film Triphenyl phosphate. 3500—1300 cm". Melt Triphenyl phosphate. 1300—400 cm". Melt Di-wopropyl sulphone. 4000—650 cm". Melt Nitrobenzene. 4000—650 cm". Thin film Dimethyl sulphoxide. 4000—650 cm". Thin film Polymeric silicone. 4000—650 cm". Thin film Calcium sulphate Dihydrate. 4000—650 cm". KBr disc... 

Butethamate 3389 tert-Butyl methyl ether 7111 Carbamyl chloride 1726... 

Arylation of Thiazoles and Oxazoles. The protocol that was previously developed for the C-H activation of azine and diazine (V-oxides with aryl triflates was used to effect the arylation of flve-membered ring heterocycles, such as oxazoles and thiazoles. In contrast to another protocol that was previously reported by the same group, the transformation did not require an V-oxide function. However, in order to direct the arylation at the C4-position, to prevent the formation of a mixture of regioisomers, and to minimize the generation of diarylated products, a C5-chloride was used as a blocking group. The procedure, which is promoted by palladium acetate and di-tert-butyl(methyl)phosphonium tetrafluoroborate, uses an aryl bromide as the electrophile. 

The rate of the reaction decreases with increasing number of substituents in the acetylenic halide, and it is higher with acetylenic bromides than with the corresponding chlorides. Methyl magnesium iodide gives equal amounts of 1,1- and 1,3--substitution products, whereas tert.-butylmagnesium bromide does not react. However, for some tert.-butyl substituted allenes there exists an attractive com-... 

The first order rate constant for ethanolysis of the allylic chloride 3 chloro 3 methyl 1 butene is over 100 times greater than that of tert butyl chloride at the same temperature... 

Both compounds react by an S l mechanism and their relative rates reflect their acti vation energies for carbocation formation Because the allylic chloride is more reactive we reason that it ionizes more rapidly because it forms a more stable carbocation Struc turally the two carbocations differ m that the allylic carbocation has a vinyl substituent on Its positively charged carbon m place of one of the methyl groups of tert butyl cation... 

Both methyltriethylphosphonium fluoride and methyltributylphospho-nium fluoride have been prepared The latter generates benzyl fluoride from benzyl chloride in 80% yield and ethyl fluoroacetate from ethyl bromoacetate in 53% yield Methyltnbutylphosphonium fluoride converts 1-bromododecane to a 50 50 mixture of 1-fluorododecane and 1-dodecene Methyltnbutylphosphonium fluoride also quantitatively forms styrene from 1-bromo-1-phenylethane [26] Methyl-tnbutylphosphonium fluonde is the reagent of choice for the conversion of N,N dimethylchloroacetamide to its fluoride, but it is not able to convert chloro-acetonitnle to fluoroacetomtrile Methyltnbutylphosphonium fluoride changes chloromethyl octyl ether to the crude fluoromethyl ether in 66% yield The stereoselectivity of methyltnbutylphosphonium fluoride is illustrated by the reac tions of the 2-tert-butyl-3-chlorooxiranes [27] (Table 2)... 

Chloro-3-methyl-1-butene tert-Butyl chloride... 

Methyl-3-athoxycarbonyl- 650 l-Methyl-2-tert.-butyl- 651 1-Methyl- -chlorid 593 l-Methyl-2-cyan- 651 l-Methyl-3-cyan- 650 1-Organo- 91 ff. 

The diazo transfer reaction between p-toluenesulfonyl azide and active methylene compounds is a useful synthetic method for the preparation of a-diazo carbonyl compounds. However, the reaction of di-tert-butyl malonate and p-toluenesulfonyl azide to form di-tert-butyl diazomalonate proceeded to the extent of only 47% after 4 weeks with the usual procedure." The present procedure, which utilizes a two-phase medium and methyltri-n-octylammonium chloride (Aliquat 336) as phase-transfer catalyst, effects this same diazo transfer in 2 hours and has the additional advantage of avoiding the use of anhydrous solvents. This procedure has been employed for the preparation of diazoacetoacetates, diazoacetates, and diazomalonates (Table I). Ethyl and ten-butyl acetoacetate are converted to the corresponding a-diazoacetoacetates with saturated sodium carbonate as the aqueous phase. When aqueous sodium hydroxide is used with the acetoace-tates, the initially formed a-diazoacetoacetates undergo deacylation to the diazoacetates. Methyl esters are not suitable substrates, since they are too easily saponified under these conditions. 

Schrauzer and co-workers have studied the kinetics of alkylation of Co(I) complexes by organic halides (RX) and have examined the effect of changing R, X, the equatorial, and axial ligands 148, 147). Some of their rate constants are given in Table II. They show that the rates vary with X in the order Cl < Br < I and with R in the order methyl > other primary alkyls > secondary alkyls. Moreover, the rate can be enhanced by substituents such as Ph, CN, and OMe. tert-Butyl chloride will also react slowly with [Co (DMG)2py] to give isobutylene and the Co(II) complex, presumably via the intermediate formation of the unstable (ert-butyl complex. In the case of Co(I) cobalamin, the Co(II) complex is formed in the reaction with isopropyl iodide as well as tert-butyl chloride. Solvent has only a slight effect on the rate, e.g., the rate of reaction of Co(I) cobalamin... 

Ogunwumi and Bein synthesized the (R,R)-N,N -bis(3-tert-butyl-5-methyl-salicylidene)-l,2-cyclohexanediaminato Mn(III) chloride (5 in Fig. 7.6) (with... 

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