Tetrahydrofuran → HCID 13957671, compound

HRID 1761343Notes

Reaction equation

HRID 1761343 reaction equation
[F:1][C:2]([F:27])([F:26])[C:3]1[NH:4][C:5]([C:22](F)([F:24])[F:23])=[C:6]([C:17]([O:19][CH2:20][CH3:21])=[O:18])[CH:7]([CH:14]([CH3:16])[CH3:15])[C:8]=1[C:9]([O:11][CH2:12][CH3:13])=[O:10].C1CCN2C(=NCCC2)CC1.C1COCC1>O>[F:24][CH:22]([F:23])[C:5]1[C:6]([C:17]([O:19][CH2:20][CH3:21])=[O:18])=[C:7]([CH:14]([CH3:15])[CH3:16])[C:8]([C:9]([O:11][CH2:12][CH3:13])=[O:10])=[C:3]([C:2]([F:27])([F:1])[F:26])[N:4]=1

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 13957629HCID 13957629, compound

Product 1

HCID 13957671HCID 13957671, compoundYield 37.8%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 50.0 g (0.124 mole) of diethyl 2,6-bis(trifluoromethyl)-1,4-dihydro-4-isopropyl-3,5-pyridinedicarboxylate, 18.87 g (0.124 mole) of DBU and 200 ml of THF is held at reflux for 18 hours and poured into water and extracted with ether. The ether extract is washed with diluted hydrochloric acid, dried (MgSO4) and concentrated. The residue is kugelrohr distilled at 1 torr to give 17.97 g (37.8%) of the desired product which is a liquid, nD25 1.4465.

Workup

  1. temperatureat reflux for 18 hours
  2. extractionextracted with ether
  3. extractionThe ether extract
  4. washis washed with diluted hydrochloric acid
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated
  7. distillationThe residue is kugelrohr distilled at 1 torr

Sources & evidence

ORD record
ord-eaff53a933c74ac5b3a912548dec91e5
Source dataset
uspto-grants-1989_05
Patent number
US04826530

Reaction notes

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