Methanethiol → HCID 86738652, compound

HRID 2199092Notes

Reaction equation

[C:1]([O:4][C@H:5]1[CH2:22][C@@:20]2([CH3:21])[C@@H:16]([CH2:17][CH:18]=[C:19]2[S:23][CH2:24][CH3:25])[C@H:15]2[C@@:6]1([F:28])[C@:7]1([CH3:27])[C:12]([CH2:13][CH2:14]2)=[CH:11][C:10](=[O:26])[CH:9]=[CH:8]1)(=[O:3])[CH3:2].[CH3:29][SH:30].C(#N)C.C(=O)=O.B(F)(F)F.CCOCC>ClCCl>[C:1]([O:4][C@H:5]1[CH2:22][C@@:20]2([CH3:21])[C@@H:16]([CH2:17][CH2:18][C:19]2([S:23][CH2:24][CH3:25])[S:30][CH3:29])[C@H:15]2[C@@:6]1([F:28])[C@:7]1([CH3:27])[C:12]([CH2:13][CH2:14]2)=[CH:11][C:10](=[O:26])[CH:9]=[CH:8]1)(=[O:3])[CH3:2]

Participants

Conditions

Temperature: -40 °C

Procedure

A solution of 1.01 g (2.5 mmole) of 11β-acetyloxy-17-(ethylthio)-9-fluoroandrosta-1,4,16-trien-3-one in 15 ml of dry dichloromethane and 3.4 ml of a solution of methyl mercaptan in dichloromethane (1.82 g in 10 ml of dry dichloromethane) is cooled to about -40° C. (acetonitrile-dry ice bath) under nitrogen; boron trifluoride etherate (0.7 ml) is then added. The solution is stirred at approximately -40° C. under nitrogen for 3 hours, quenched with a saturated sodium bicarbonate solution at -40° C. under vigorous stirring, diluted with chloroform, washed with water, dried over anhydrous Na2SO4 and evaporated in vacuo to give 1.0 g of the title compound, melting point 185°-186° C., with consistent spectral data.

Workup

customquenched with a saturated sodium bicarbonate solution at -40° C. under vigorous stirring
additiondiluted with chloroform
washwashed with water
dry with materialdried over anhydrous Na2SO4
customevaporated in vacuo

Sources & evidence

ORD record: ord-4c86f3e20d4a4d42b1f40e08bdcbfae9
Source dataset: uspto-grants-1982_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04361559

Reaction notes

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