5-(Benzyloxy)-2-methylbenzoic acid → 2-(1-{[5-(Benzyloxy)-2-methylphenyl]carbonyl}piperidin-4-yl)-5-(3,4-diethoxyphenyl)-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one

Participants

Role	Name	HCID	Charge
Reactant	5-(Benzyloxy)-2-methylbenzoic acid	HCID 59760047	—
Reactant	5-(3,4-diethoxyphenyl)-4,4-dimethyl-2-piperidin-4-yl-2,4-dihydro-3H-pyrazol-3-one hydrochloride	HCID 66616549	—
Product	2-(1-{[5-(Benzyloxy)-2-methylphenyl]carbonyl}piperidin-4-yl)-5-(3,4-diethoxyphenyl)-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one	HCID 67363040	—

Reaction Steps

The title compound is prepared analogously as described for GP2-WU2 using 5-(3,4-diethoxyphenyl)-4,4-dimethyl-2-piperidin-4-yl-2,4-dihydro-3H-pyrazol-3-one (compound B2) and 5-(benzyloxy)-2-methylbenzoic acid (compound F1) as starting compounds. The crude product is purified by chromatography (amino phase silica gel and DCM) and by a second chromatography (silica gel and cyclohexane/EA=6:4) to yield the title compound.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US09340522B2
Source dataset	uspto-grants-2016_05
ORD ID	ord-46c023fe889345e99683d2dc577f0af2
Source note	uspto-grants-2016_05