Diethylamine → MLS003115719
Reaction equation
C(O[C:4]([C:6]1[O:10][N:9]=[C:8]([C:11]2[C:20]3[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=3)[CH:14]=[CH:13][CH:12]=2)[N:7]=1)=[O:5])C.[CH2:21]([NH:23][CH2:24][CH3:25])[CH3:22]>>[CH2:21]([N:23]([CH2:24][CH3:25])[C:4]([C:6]1[O:10][N:9]=[C:8]([C:11]2[C:20]3[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=3)[CH:14]=[CH:13][CH:12]=2)[N:7]=1)=[O:5])[CH3:22]Participants
3
Procedure
5-Ethoxycarbonyl-3-α-naphthyl-1,2,4-oxadiazole (30.9 g.) was heated under reflux in an excess of diethylamine (35.6g.) for 1.5 hr. The mixture was cooled and evaporated under reduced pressure to give a solid which was recrystallised from methanol yielding title compound (29.3 g.), m.p. 101.5°-102.5°, λmax. (EtOH) 302 nm. (ε 9,700), νmax. (CHBr3) 1662 cm.-1 (CONEt2).
Workup
- temperatureThe mixture was cooled
- customevaporated under reduced pressure
- customto give a solid which
- customwas recrystallised from methanol yielding title compound (29.3 g.), m.p. 101.5°-102.5°, λmax
Sources & evidence
- ORD record
- ord-b26934a6b2ee403ea1c3ce70522ba405
- Source dataset
- uspto-grants-1976_11
- Patent number
- US03991067
Reaction notes
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