Fert-Butyl acetate

The submitters obtained N-Boc-4-hydroxyproline methyl ester from Synthetech, Inc. [Albany, OR, (503) 967-6575] or Bachem California [Torrance, CA, (310) 530-1571] and dried THF over 4A molecular sieves for two days prior to use (Karl-Fischer titration gave 145 pg/mL water). The checkers purchased N-Boc hydroxyproline methyl ester (97%) and fert-butyl acetate (99+%) from Aldrich Chemical Co. and obtained THF (HPLC grade) from Fisher Scientific. 

BuAc, see sec-Butyl acetate sec-BuAc, see sec-Butyl acetate f-BuAc, see fert-Butyl acetate i-BuBz, see Isobutylbenzene n-BuBz, see Butylbenzene sec-BuBz, see sec-Butylbenzene f-BuBz, see fert-Butylbenzene fert-BuBz, see fert-Butylbenzene BUGS, see 2-Butoxyethanol Bug master, see Carbaryl Bunt-cure, see Hexachlorobenzene Bunt-no-more, see Hexachlorobenzene 1-BuOH, see 1-Butanol... 

Isobutylcatechol, see Isobutylbenzene Isobutylene, see fert-Butyl acetate Isocyanatomethane, see Aldicarb Isocyanatonaphthalene, see Alachlor... 

The diastereoselectivity for the reaction of 157, which possesses a 2-methyl-1,3-dioxolanyl group, with enolates generated from fert-butyl acetate was found to be highly dependent on the reaction conditions.89 For example, the lithium enolate gave (Ss,S)-158 (72% de) while the titanium enolate afforded (Ss,/ )-158 (92% de). A non-chelation-controlled transition state was used to explain the preferential formation of (Ss,S)-158 while a six-membered chairlike transition state containing a four-membered metallocycle and/or a seven-membered counterpart was proposed for the formation of the (Ss,R)-158. Treatment of (Ss,S)-158 with TFA gave P-amino acid 159 in 70% yield. 

Examples are given of common operations such as absorption of ammonia to make fertilizers and of carbon dioxide to make soda ash. Also of recovery of phosphine from offgases of phosphorous plants recovery of HF oxidation, halogenation, and hydrogenation of various organics hydration of olefins to alcohols oxo reaction for higher aldehydes and alcohols ozonolysis of oleic acid absorption of carbon monoxide to make sodium formate alkylation of acetic acid with isobutylene to make fert-butyl acetate, absorption of olefins to make various products HCl and HBr plus higher alcohols to make alkyl halides and so on. 

There are also some examples of solvates (as opposed to hydrates) that have been reported to exhibit differing bioavailability. For instance, for implants of the methanol solvate of predisolone fert-butyl acetate the mean absorption rate was found to be 4.7 times that of the anhydrous form, which in turn was similar to the hemiacetone solvate (Ballard and Biles 1964). The same authors also reported that the mean absorption rate for all solvates of cortisol ferf-butyl acetate were significantly different from that of the anhydrous form. 

For the other fuel oxygenates detailed studies on the reaction pathways are not as abundantly available in literature. However, the similarity in chemical structure implies similar reaction by-products. In the case of TAME, tert-amyl formate and tert-amyl alcohol were observed instead of fBF and fBA, and their subsequent degradation products however, acetone and methyl acetate were observed as well [117]. The attack on the methoxy group was observed to be the major pathway, corresponding to the MTBE ehmination. During the elimination of ETBE the same reaction by-products were observed as with MTBE, with the exception of fert-butyl acetate which was formed instead of fBF [30]. 

Generate the enolate of fert-butyl acetate with lithium diisopropylamide then add cyclohexanone. 

The data for sec-butyl acetate and fert-butyl acetate is similar to that given for -butyl acetate). 

Acid hydrolysis of fert-butyl acetate in 0-labeled water was found to give tert-butyl alcohol having an content nearly identical to that of the solvent. Suggest a mechanism consistent with this observation. (It was shown that incorporation of into tert-butyl alcohol after it was formed did not occur.)... 

VSH Vshivkov, S.A., Rusinova, E.V., and Zarudko, I.V., Thermodynamics of the polystyrene-fert-butyl acetate system, Vysokomol. Soedin., Ser. A, 39, 1043, 1997. 

Notario et al. (1998) and Xing et al. (2009) have studied the rate of reaction of chlorine atoms with fert-butyl acetate. As seen from table vn-B-28 there is a significant... 

Combining/E(0H + (CH3)3C0C(0)CH3) = 5.75xl0 i cm molecule with a diurnal average of [OH] 1.0 x 10 molecule cm gives an estimate of about 20 days for the atmospheric lifetime with respect to reaction with OH radicals. Reaction with OH radicals dominates the atmospheric fate of fert-butyl acetate. 

LeCalve, S., G. Le Bras, and A. MeUouki (1997c), Kinetic studies of OH reactions with isopropyl, iso-butyl, sec-butyl, and fert-butyl acetate, Int. J. Chem. Kinet., 29, 683-688. 

Thus, in an intermolecular competition for reaction between N,N-dibenzylforma-mide 75 and fert-butyl acetate 76 as well as between N,N-dibenzylacetamide 77 and fert-butyl acetate 76, the amide won both times to yield only the corresponding cydopropylamine (Scheme 12.49). 

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