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87866-11-3

1-(CHLOROACETYL)-5-NITROINDOLINE synthesis

3synthesis methods
-

Yield:87866-11-3 92%

Reaction Conditions:

in ethyl acetate at 40 - 80; for 0.5 h;

Steps:

1.1 (1) Preparation of 1-(2-chloroacetyl)-5-nitroindoline

(1) Preparation of 1-(2-chloroacetyl)-5-nitroindoline
5-nitroindoline (16.4g, 100mmol) was dissolved in ethyl acetate (200ml), and then chloroacetyl chloride (9.6ml 120mmol) was slowly added at 40 °C. The resulting mixture was heated to 80 °C, and reacted for 0.5 hour. The reaction mixture was cooled and filtered by suction. The filtrate was crystallized to produce 1-(2-chloroacetyl)-5-nitroindoline (22g) as a grey solid in a yield of 92%.

References:

EP2930167,2015,A1 Location in patent:Paragraph 0103; 0104