hexan-2-one

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: A 2-ethylhexanol monourethane of 2,4-toluene diisocyanate was prepared by adding 1953 parts of 2-ethylhexanol to an agitated mixture of 2610 parts of 2,4-TDI and 200 parts of methyl butyl ketone over approximately a 3 hour period with external cooling to maintain the reaction temperature below 18° C. After the addition was completed, the product was stored under dry nitrogen for subsequent use. with external cooling to maintain the reaction temperature below 18° C After the addition

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

Procedure: A 2-ethylhexanol monourethane of 2,4-toluene diisocyanate sample was prepared by adding 651 parts of 2-ethylhexanol to an agitated mixture of 870 parts of 2,4-TDI and 100 parts methyl butyl ketone over approximately 3 hours, with external cooling to maintain the reaction temperature below 18° C. After addition was complete, the batch was agitated an additional 2 hours and stored under dry nitrogen for subsequent use. with external cooling to maintain the reaction temperature below 18° C After addition

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

Procedure: 2-Hexanone (26.7 g) was added dropwise over 5 min at room temperature to a stirred suspension of sodium amide (10.4 g) in dry ether (290 ml) under nitrogen. The reaction mixture was stirred for 13 min. and a solution of methyl phenylmethoxyacetate (24.0 g) in dry ether (40 ml) was added dropwise over 12 min. The mixture was then heated at reflux for 3 h, cooled, and then poured into ice (400 g) and 2N HC1 (200 ml). The aqueous phase was extracted with ether (2×350 ml) and the combined etheral solution washed with 8% sodium bicarbonate solution (2×250 ml), water (200 ml) and brine (200 ml), then dried and evaporated to leave a yellow liquid (35.8 g). This was purified by column chromatography on silica gel eluting with System A (2:98) to give the title compound as a yellow oil (10.95 g). The mixture was then heated at reflux for 3 h cooled The aqueous phase was extracted with ether (2×350 ml) the combined etheral solution washed with 8% sodium bicarbonate solution (2×250 ml), water (200 ml) and brine (200 ml) dried evaporated

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

Procedure: 2-Hexanone (26.7 g) was added dropwise over 5 min at room temperature to a stirred suspension of sodium amide (10.4 g) in dry ether (290 ml) under nitrogen. The reaction mixture was stirred for 13 min. and a solution of methyl phenylmethoxyacetate (24.0 g) in dry ether (40 ml) was added dropwise over 12 min. The mixture was then heated at reflux for 3 h, cooled, and then poured into ice (400 g) and 2N HC1 (200 ml). The aqueous phase was extracted with ether (2×350 ml) and the combined etheral solution washed with 8% sodium bicarbonate solution (2×250 ml), water (200 ml) and brine (200 ml), then dried and evaporated to leave a yellow liquid (35.8 g). This was purified by column chromatography on silica gel eluting with System A (2:98) to give the title compound as a yellow oil (10.95 g). The mixture was then heated at reflux for 3 h cooled The aqueous phase was extracted with ether (2×350 ml) the combined etheral solution washed with 8% sodium bicarbonate solution (2×250 ml), water (200 ml) and brine (200 ml) dried evaporated

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

Procedure: 2-Hexanone (96.8 g) was added dropwise over 15 min under nitrogen to a stirred suspension of sodium amide (37.7 g) in dry ether (1 liter) at room temperature. The mixture was stirred for 12 min, a solution of methyl methoxyacetate (50.3 g) in dry ether (150 ml) was added dropwise over 20 min, and the mixture was heated under reflux for 2 h. The mixture was cooled, poured into ice and 2N hydrochloric acid (600 ml) and the aqueous layer extracted with ether (4×300 ml). The organic layers were washed with 8% sodium bicarbonate solution and brine, dried and evaporated to give an orange liquid (102 g). Purification by DFC, eluting with System A (5:95) gave a yellow liquid (36 g). the mixture was heated under reflux for 2 h The mixture was cooled the aqueous layer extracted with ether (4×300 ml) The organic layers were washed with 8% sodium bicarbonate solution and brine dried evaporated

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

Procedure: 2-Hexanone (96.8 g) was added dropwise over 15 min under nitrogen to a stirred suspension of sodium amide (37.7 g) in dry ether (1 liter) at room temperature. The mixture was stirred for 12 min, a solution of methyl methoxyacetate (50.3 g) in dry ether (150 ml) was added dropwise over 20 min, and the mixture was heated under reflux for 2 h. The mixture was cooled, poured into ice and 2N hydrochloric acid (600 ml) and the aqueous layer extracted with ether (4×300 ml). The organic layers were washed with 8% sodium bicarbonate solution and brine, dried and evaporated to give an orange liquid (102 g). Purification by DFC, eluting with System A (5:95) gave a yellow liquid (36 g). the mixture was heated under reflux for 2 h The mixture was cooled the aqueous layer extracted with ether (4×300 ml) The organic layers were washed with 8% sodium bicarbonate solution and brine dried evaporated

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

Procedure: A 2-ethylhexanol monourethane of 2,4-toluene diisocyanate was prepared by adding 1953 parts of 2-ethylhexanol to an agitated mixture of 2610 parts of 2,4-TDI and 200 parts of methyl butyl ketone over approximately a 3-hour period with external cooling to maintain the reaction temperature below 18° C. After the addition was completed, the product was stored under dry nitrogen for subsequent use. with external cooling to maintain the reaction temperature below 18° C After the addition

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

Procedure: A 2-ethylhexanol monourethane of 2,4-toluene diisocyanate was prepared by adding 1953 parts of 2-ethylhexanol to an agitated mixture of 2610 parts of 2,4-TDI and 200 parts of methyl butyl ketone over approximately a 3-hour period with external cooling to maintain the reaction temperature below 18° C. After the addition was completed, the product was stored under dry nitrogen for subsequent use. with external cooling to maintain the reaction temperature below 18° C After the addition

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

Procedure: A 2-ethylhexanol monourethane of 2,4-toluene diisocyanate sample was prepared by adding 651 parts of 2-ethylhexanol to an agitated mixture of 870 parts of 2,4-TDI and 100 parts methyl butyl ketone over approximately 3 hours, with external cooling to maintain the reaction temperature below 18° C. After addition was complete, the batch was agitated an additional 2 hours and stored under dry nitrogen for subsequent use. with external cooling to maintain the reaction temperature below 18° C After addition