Thionyl Chloride → HCID 20225437, compound
Reaction equation
[C:1]([N:11]1[C:19]2[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=2)[C:13]([CH:20](O)[CH3:21])=[CH:12]1)([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2].S(Cl)([Cl:25])=O>C(Cl)Cl>[C:1]([N:11]1[C:19]2[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=2)[C:13]([CH:20]([Cl:25])[CH3:21])=[CH:12]1)([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
To a stirred solution of 1-(N-carbobenzoxy indol-3-yl)ethanol (1.02 g, 3.45 mmol) in CH2Cl2 (20 ml) at -78° C. under nitrogen was added thionyl chloride (0.63 ml, 8.62 mmol). After warming to room temperature and stirring for 2 hrs, the mixture was evaporated to a brown oil. This was dissolved in CHCl3, treated with activated carbon and filtered through a pad of Super Cel; the filtrate was evaporated to give 1.03 g (95%) of light brown oil: NMR (CDCl3) δ1.90 (3, d, CH3), 5.26 (1, q, CHCl), 5.33 (2, s, PhCH2), 7.20-7.85 (9, m, aromatic H's) 8.04 ppm (1, m, H-7). This material was relatively unstable, and therefore was used immediately without further purification (e.g. as in Example 13).