2-Mercaptoethanol → 2-[[(4-Nitrophenyl)methyl]thio]ethanol

β-Mercaptoethanol (3.3 mL, 47.2 mmol) was added to a suspension of 4-nitrobenzyl bromide (10.0 g, 46.3 mmol), K2CO3 (16.1 g, 116.5 mmol), KI (154 mg, 0.9 mmol), and 18-crown-6 (258 mg, 1.0 mmol) in acetone (105 mL). The mixture was refluxed under N2 for 1.5 h, cooled to room temperature, filtered through a pad of celite, and concentrated in vacuo. The filtrate was poured into water (100 mL) and extracted with Et2O (2×100 mL). The extracts were washed with brine (150 mL), dried over Na2SO4, filtered, and concentrated in vacuo to give an orange oil (11.78 g), which was used in the following step without purification. MS: M(C9H11NO3S)=213.26, (M−OH)+=196.0.

1. temperatureThe mixture was refluxed under N2 for 1.5 h
2. filtrationfiltered through a pad of celite
3. concentrationconcentrated in vacuo
4. additionThe filtrate was poured into water (100 mL)
5. extractionextracted with Et2O (2×100 mL)
6. washThe extracts were washed with brine (150 mL)
7. dry with materialdried over Na2SO4
8. filtrationfiltered
9. concentrationconcentrated in vacuo

ORD-Eintrag

ord-32e3c75c7aed4e02ba24e57c8a92b97a

Quelldatensatz

uspto-grants-2011_02

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07884098B2