تفاعل #432016

معادلة التفاعل

hydrochloric acid

N-methoxy-N-methyl anthranilic acid amide

n-BuLi

4-benzyloxy-bromobenzene

→

4'-benzyloxy-2-aminobenzophenone

المذيبات

tetrahydrofuran

ظروف التفاعل

المعالجة

1. 1
   أخرىat -78° C.
2. 2
   استخلاصthe mixture extracted with ethyl acetate (150 ml), ethyl acetate
3. 3
   غسيلwashed with water, brine
4. 4
   تجفيفdried over magnesium sulfate
5. 5
   تركيزconcentrated
6. 6
   أخرىRecrystallization from hexanes

الإجراء التجريبي

To a mixture of N-methoxy-N-methyl anthranilic acid amide prepared as in Example 1(A)(2.00 g, 11.1 mmol) and 4-benzyloxy-bromobenzene (2.92 g, 11.1 mmol) in anhydrous tetrahydrofuran (65 ml) at -78° C. under nitrogen is added, with vigorous stirring, n-BuLi in hexanes (13.8 ml, 1.6M, 22.2 mmol) at 0.60 ml/min. After 20 min, aqueous hydrochloric acid is added (1N, 20 ml), the mixture extracted with ethyl acetate (150 ml), ethyl acetate washed with water, brine, dried over magnesium sulfate, and concentrated. Recrystallization from hexanes gave 4'-benzyloxy-2-aminobenzophenone as yellow crystals; yield: 2.35 g, (70%); m.p. 99°-101° C.

المصدر