3-Hydroxypyridine → Methyl 8-(p-chlorophenylsulfonamido)-4-[2-(3-pyridyloxy)ethyl]-octanoate

HRID 465557Notes

Reaction equation

HRID 465557 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][CH2:12][CH2:13][CH2:14][CH2:15][CH:16]([CH2:23][CH2:24][O:25]S(C)(=O)=O)[CH2:17][CH2:18][C:19]([O:21][CH3:22])=[O:20])(=[O:10])=[O:9])=[CH:4][CH:3]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.O[C:50]1[CH:51]=[N:52][CH:53]=[CH:54][CH:55]=1.N(C(OCC)=O)=NC(OCC)=O>C(Cl)Cl>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][CH2:12][CH2:13][CH2:14][CH2:15][CH:16]([CH2:23][CH2:24][O:25][C:50]2[CH:51]=[N:52][CH:53]=[CH:54][CH:55]=2)[CH2:17][CH2:18][C:19]([O:21][CH3:22])=[O:20])(=[O:10])=[O:9])=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 79713-HydroxypyridineHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 10050375Methyl 8-(p-chlorophenylsulfonamido)-4-(2-methylsulfonyloxyethyl)-octanoate

Product 1

HCID 10027654Methyl 8-(p-chlorophenylsulfonamido)-4-[2-(3-pyridyloxy)ethyl]-octanoate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 1.2 g of methyl 8-(p-chlorophenylsulfonamido)-4-(2-hydroxyethyl)-octanoate (example 28) in 12 ml methylene chloride is added 1.14 g triphenylphosphine followed by 0.336 g 3-hydroxypyridine. After stirring for 5 min, 0.55 ml diethyl azodicarboxylate is added slowly. After 1 h, solvent is evaporated and the residue subjected to flash chromatography to obtain methyl 8-(p-chlorophenylsulfonamido)-4-[2-(3-pyridyloxy)ethyl]-octanoate, m.p. 57°-58°.

Workup

  1. waitAfter 1 h
  2. customsolvent is evaporated

Sources & evidence

ORD record
ord-e467e76377374649b9609897ffa8608d
Source dataset
uspto-grants-1992_10
Patent number
US05153214

Reaction notes

Loading…