5,6-dichloro-2,3-dihydro-1H-inden-1-ol

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 17.48 g of the product of Step B, 470 ml of toluene, 0.57 g of 4-tert.-butyl-catechol and 1.63 g of p-toluene sulfonic acid was refluxed for 2 hours and then was diluted with water. 10 ml of N sodium hydroxide solution were added and the mixture was extracted with toluene. The organic phase was evaporated to dryness under reduced pressure and the residue was taken up in hexane. The mixture was vacuum filtered and the crystalline product was dried to obtain 9 g of the desired product melting at 76° C. was refluxed for 2 hours the mixture was extracted with toluene The organic phase was evaporated to dryness under reduced pressure filtered the crystalline product was dried

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4.85 g of sodium borohydride were added at 0° C. to a solution of 4 g of the product of Step A in 285 ml of methanol and after stirring for one hour, the methanol was evaporated. The residue was diluted with water and excess hydride was eliminated by addition of hydrochloric acid. The mixture was extracted with ethyl acetate and the organic phase was evaporated to dryness under reduced pressure to obtain the desired product melting at 84° C. the methanol was evaporated The residue was diluted with water and excess hydride was eliminated by addition of hydrochloric acid The mixture was extracted with ethyl acetate the organic phase was evaporated to dryness under reduced pressure

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 17.48 g of the product of Step B, 470 ml of toluene, 0.57 g of 4-tert.-butyl-catechol and 1.63 g of p-toluene sulfonic acid was refluxed for 2 hours and then was diluted with water. 10 ml of N sodium hydroxide solution were added and the mixture was extracted with toluene. The organic phase was evaporated to dryness under reduced pressure and the residue was taken up in hexane. The mixture was vacuum filtered and the crystalline product was dried to obtain 9 g of the desired product melting at 76° C. was refluxed for 2 hours the mixture was extracted with toluene The organic phase was evaporated to dryness under reduced pressure filtered the crystalline product was dried

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 17.48 g of the product of Step B, 470 ml of toluene, 0.57 g of 4-tert.-butyl-chatechol and 1.63 g of p-toluene sulfonic acid was refluxed for 2 hours and then was diluted with water. 10 ml of N sodium hydroxide solution were added and the mixture was extracted with toluene. The organic phase was evaporated to dryness under reduced pressure and the residue was taken up in hexane. The mixture was vacuum filtered and the crystalline product was dried to obtain 9 g of the desired product melting at 76° C. was refluxed for 2 hours the mixture was extracted with toluene The organic phase was evaporated to dryness under reduced pressure filtered the crystalline product was dried

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 4.85 g of sodium borohydride were added at 0° C. to a solution of 4 g of the product of Step A in 285 ml of methanol and after stirring for one hour, the methanol was evaporated. The residue was diluted with water and excess hydride was eliminated by addition of hydrochloric acid. The mixture was extracted with ethyl acetate and the organic phase was evaporated to dryness under reduced pressure to obtain the desired product melting at 84° C. the methanol was evaporated The residue was diluted with water and excess hydride was eliminated by addition of hydrochloric acid The mixture was extracted with ethyl acetate the organic phase was evaporated to dryness under reduced pressure