反应条件: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: A flask equipped with an overhead stirred, thermometer and addition funnel was placed under a nitrogen atmosphere then charged with (E)-hex-2-enoic acid (89.8 g, 787 mmol), EDCI (158.3 g, 826 mmol), HOBt (112.0 g, 826 mmol) and IPAc (890 mL) then cooled to 0±5° C. The addition funnel was charged with NMM (99.1 mL, 1.6 mol) which was then added to the reaction mixture maintaining the temperature at 0±5° C. The mixture was stirred for 30 minutes then cyclopropylamine (60.0 mL, 866 mmol) was added and the reaction allowed to warm to 25±5° C. over 16 hours. The reaction mixture was washed by adding hydrochloric acid (500 mL, 1.0 N) and the mixture stirred vigorously for 30 minutes then allowed to sit for 30 minutes; the layers were separated and the washing procedure repeated. Sodium hydroxide (500 mL, 1.0 N) was added and then the mixture stirred vigorously for 30 minutes then allowed to sit for 30 minutes; the layers were separated and base wash procedure repeated. Water (500 mL) was added and then the mixture stirred vigorously for 30 minutes then allowed to sit for 30 minutes; the layers were separated and the wash procedure repeated. The combined organic phases were concentrated under reduced pressure to ⅓ original volume then IPAc (600 mL) was added; this was repeated two times when a white precipitate formed. The slimy was then concentrated under atmospheric pressure to ⅔ original volume then cooled to 50±5° C. N-heptane (890 mL) was slowly added while the reaction was cooled to −5±5° C. and held at this temperature for 4 hours. The solid was filtered, washed with cold n-heptane (2×250 mL) and dried to provide compound 37 as a fine white solid. 1H NMR (500 MHz, d6-DMSO) 7.89 (s, 1H), 6.58 (dt, J=15.2, 7.0 Hz, 1H), 5.80 (dt, J=15.2, 1.3 Hz, 1H), 2.70-2.65 (m, 1H), 2.12-2.06 (m, 2H), 1.44-1.37 (m, 2H), 0.88 (t, J=7.3 Hz, 3H), 0.64-0.60 (m, 2H), 0.42-0.38 (m, 2H).
A flask equipped with an overhead
thermometer and addition funnel
was then added to the reaction mixture
maintaining the temperature at 0±5° C
The mixture was stirred for 30 minutes
to warm to 25±5° C. over 16 hours
The reaction mixture was washed
by adding hydrochloric acid (500 mL, 1.0 N)
the mixture stirred vigorously for 30 minutes
the layers were separated
Sodium hydroxide (500 mL, 1.0 N) was added
the mixture stirred vigorously for 30 minutes
to sit for 30 minutes
the layers were separated
base wash procedure
Water (500 mL) was added
the mixture stirred vigorously for 30 minutes
to sit for 30 minutes
the layers were separated
The combined organic phases were concentrated under reduced pressure
IPAc (600 mL) was added
formed
The slimy was then concentrated under atmospheric pressure
then cooled to 50±5° C
N-heptane (890 mL) was slowly added while the reaction
was cooled to −5±5° C.
held at this temperature for 4 hours
The solid was filtered
washed with cold n-heptane (2×250 mL)
dried
来源 ID: ord-65b5b3269cd84bffaec724b49abd9fdf