4-Toluenesulfonyl chloride → HCID 88794690, compound

Participants

Reaction Conditions

Reaction Steps

The compound of formula VI, 3,4-dihydro-3,3-dimethylfuro[3,4-b]quinolin-9(1H)-one (4.3 g, described in Example 8), is added portionwise to a solution of tosyl chloride (3.8 g) in dry pyridine (50 ml) at 0° C. The solution is stirred at 0° C. for 30 minutes and saturated salt solution is added. The mixture is extracted with ether and the ether extract is evaporated. Toluene is added to the residue and the solution is evaporated. The residue is crystallized from methanol to give the title compound, mp 116°-118° C.

Provenance & Evidence