N-(2-Hydroxyethyl)carbaModithioic Acid Methyl Ester

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of N-(2-hydroxyethyl)dithiocarbamic acid methyl ester (1.513 g) and isobutoxyethylene (2.59 ml) is added toluene-p-sulfonic acid monohydrate (9.5 mg). After stirring for 30 minutes, triethylamine (8 μl) is added to the mixture, and the resulting solution is concentrated under reduced pressure to give N-[2-(1-isobutoxyethyl)ethyl]dithiocarbamic acid methyl ester (3.2 g). Yield: 95%. the resulting solution is concentrated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To an ice cold and stirred mixture of N-(2-hydroxyethyl)dithiocarbamic acid methyl ester (1.513 g) and ethoxyethylene (1.92 ml) is added toluene-p-sulfonic acid monohydrate (9.5 mg). After stirring for 30 minutes at room temperature, the homogeneous solution is mixed with triethylamine (8 μl) and concentrated under reduced pressure to yield N-[2-(1-ethoxyethoxy)ethyl]dithiocarbamic acid methyl ester (2.4 g). concentrated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of N-(2-hydroxyethyl)dithiocarbamic acid methyl ester (81.7 g) in dichloromethane (300 ml) are added dihydropyran (54 g) and toluene-p-sulfonic acid monohydrate (1.0 g), and the mixture is stirred for 1 hour. The reaction mixture is poured in aqueous sodium hydrogen carbonate, shaken and the resulting organic layer is separated. The layer is concentrated under reduced pressure to give N-[2-(2-tetrahydropyranyl)oxyethyl]dithiocarbamic acid methyl ester (129 g). shaken the resulting organic layer is separated The layer is concentrated under reduced pressure

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: In a sealed glass tube is placed a solution of N-(2-hydroxyethyl)dithiocarbamic acid methyl ester (4.3 g), isobutene (30 ml) and concentrated sulfuric acid (0.1 ml) in dichloromethane (20 ml) prepared at -50° C. to -60° C. The mixture is warmed slowly to room temperature and then left to stand for 17 hours. The reaction mixture is poured into aqueous 0.5% sodium hydroxide and extracted with dichloromethane. The extract is washed with water, dried and concentrated to give N-(2-t-butoxyethyl)dithiocarbamic acid methyl ester. In a sealed glass tube is placed left extracted with dichloromethane The extract is washed with water dried concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of N-(2-hydroxyethyl)dithiocarbamic acid methyl ester (7.5 g) in pyridine (40 ml) is added triphenylmethyl chloride (15 g), and the mixture is left to stand overnight at room temperature. The reaction mixture is poured into water and extracted with ethyl acetate. The extract is washed with diluted hydrochloric acid and water, dried and concentrated to remove the solvent. The residue is crystallized from a mixture of dichloromethane and ether to give N-(2-triphenylmethoxyethyl)dithiocarbamic acid methyl ester (14.73 g). the mixture is left extracted with ethyl acetate The extract is washed with diluted hydrochloric acid and water dried concentrated to remove the solvent The residue is crystallized from a mixture of dichloromethane and ether

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture of methyl N-(2-hydroxyethyl)dithiocarbamate (3.7 g.), sodium azide (2.4 g.), water (20 ml.) and dioxane (20 ml.) was heated under reflux for four hours. After the dioxane was removed from the mixture under reduced pressure, the aqueous solution was washed with ether. The solution was adjusted to pH 1 with 10% hydrochloric acid and extracted with ethyl acetate. The extract was concentrated under reduced pressure to give oily product (0.47 g.). The oily product was purified by column chromatography on silica gel to give 1-(2-hydroxyethyl)-1H-tetrazole-5-thiol (0.17 g.). m.p. 135° to 137° C. was heated under reflux for four hours After the dioxane was removed from the mixture under reduced pressure the aqueous solution was washed with ether extracted with ethyl acetate The extract was concentrated under reduced pressure to give oily product (0.47 g.) The oily product was purified by column chromatography on silica gel