The preparation of water-soluble side chain 15 was initiated from commercially available 2-chloronicotinic acid (9), which was converted to the corresponding tert-butyl ester 11 via acid halide 10 in excellent yield for the two-step protocol. Subjection of pyridyl chloride 11 to methanolic methylam...
4,4'-Di-tert-butyl-2,2'-bipyridine--A useful ligand in chemical reactions Mar 24, 2020 Related articles And Qustion Review and related research on 4-Dimethylaminopyridine Mar 4, 2024 4-Dimethylaminopyridine: An Effective Acyl Transfer Agent Apr 14, 2023 See also What is N,N-Diisopropylet...
Examples describe the reaction of (1) aniline with propylene, (2) phenol with methanol, (3) diphenylamine with cyclohexene, (4) thiophene with tert.-butyl alcohol, (5) pyridine with ethyl chloride.ALSO:The following aluminosilicates are used as alkylation catalysts:-(1) mordenite is reacted ...
Which of the following sets of reagents would not result in alkylation of benzene? a. tert-butyl chloride + AlCl_3. b. methylpropane + H_2SO_4. c. tert-butyl alcohol + H_3PO_4. d. methylpropene + HF (or acid can be H_3PO_4). ...
Briefly, the target compound1(Fig.1a) features four portions that were linked by the application of conventional in-solution chemistry procedures (Supplementary Fig.S1). Hexaethylene glycol (2) was mono-protected withtert-butyldimethylsilyl chloride (TBSCl) and imidazole affording compound3. The hydr...
a. tert-butyl chloride + AlCl_3. b. methylpropane + H_2SO_4. c. tert-butyl alcohol + H_3PO_4. d. methylpropene + HF (or acid can be H_3PO_4). Which of the following carbonyl carbons is the most electrophilic? acetophenone a-bromoacetophenone a, a-dibromoacetop...
10. The method of claim 7, wherein said chemical transporter is selected from the group consisting of diethyl ether, monooctanoin, methyl tert-butyl ether, alcohol and halothane; or combinations thereof. 11. The method of claim 10, wherein said wherein said halothane is selected from the gr...
Chemical protecting groups are well known by those in the art of peptide synthesis to include, but are not limited to, tBu (t-butyl), trt (triphenylmethyl(trityl)), OtBu (tert-butoxy), Boc or t-Boc (tert-butyloxycarbonyl), Fmoc (9-fluorenylmethoxycarbonyl), Aoc (t-amyloxy-carbonyl), ...
Alkyl having up to 18 carbon atoms is a branched or unbranched radical, for example methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, 2-ethylbutyl, n-pentyl, isopentyl, 1-methylpentyl, 1,3-dimethylbutyl, n-hexyl, 1-methylhexyl, n-heptyl, isoheptyl, 1,1,3,...
An alkyl radical V can be methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl or tert-butyl. Derivatives of the carboxyl or sulfo group are for example carbamoyl, N-methyl-, N-ethyl-, N,N-dimethyl and N,N-diethylcarbamoyl, cyano, acetyl, propionyl, butyryl, methoxycarbonyl, ...