Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 558-42-9, name is 1-Chloro-2-methyl-2-propanol. A new synthetic method of this compound is introduced below., 558-42-9
INTERMEDIATE 13; (3R.6S)-3-Amino-6-(‘2.3-difluorophenylVl-(2-hydroxy-2-methylpropyl’)azepan-2-one; Step A. Di-fert-butyl r(3R.66f)-6-(;2.3-difluorophenylVl-(;2-hvdroxy-2-methylpropylV2-oxoazepan-3- yl] imidodicarbonate; A solution of (55)-N2,N2-bis(tert-butoxycarbonyl)-5-(2,3-difluorophenyl)-D-lysine (0.569 g, 1.24 mmol), l-chloro-2-methyl-2-propanol (0.202 g, 1.86 mmol) and diisopropylethylamine (0.529 g, 4.10 mmol) in EtOH (5 mL) was heated at 75 0C overnight. The reaction was concentrated to dryness, diluted with DCM (20 mL) and EDC (0.358 g, 1.87 mmol), HOAT (0.252 g, 1.87 mmol) were added followed by diisopropylethylamine (0.650 mL, 3.73 mmol). After stirring overnight, NaHCO3 was added, the layers separated and the aqueous phase backwashed with DCM. The combined organics were dried over magnesium sulfate, filtered, concentrated and the residue purified by silica gel chromatography (10percent –> 35percent EtOAc / hexanes) to give the title compound (0.21 g). MS 513.1 (M+l). 1HNMR (500 MHz, CD3OD) delta 7.1 (m, 3H), 5.24 (d, J= 10.7 Hz, IH), 4.02 (m, IH), 3.69 (d, J= 13.9 Hz, IH), 3.60 (d, EPO
At the same time, in my other blogs, there are other synthetic methods of this type of compound,558-42-9, 1-Chloro-2-methyl-2-propanol, and friends who are interested can also refer to it.
Reference:
Patent; MERCK & CO., INC.; WO2006/41830; (2006); A2;,
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts