Hydrochloric Acid → (+/-)-1-(4-chloro-3,6,7,8-tetrahydro-2H-indeno[4,5-b]furan-2-yl)methanamine
Reaction equation
[Cl:1][C:2]1[C:13]2[CH2:12][CH:11]([CH2:14][N:15]=[N+]=[N-])[O:10][C:9]=2[C:8]2[CH2:7][CH2:6][CH2:5][C:4]=2[CH:3]=1.Cl>[Pt]>[Cl:1][C:2]1[C:13]2[CH2:12][CH:11]([CH2:14][NH2:15])[O:10][C:9]=2[C:8]2[CH2:7][CH2:6][CH2:5][C:4]=2[CH:3]=1Participants
Procedure
Treatment of (±)-(4-chloro-3,6,7,8-tetrahydro-2H-indeno[4,5-b]furan-2-yl)methyl 4-methylbenzenesulfonate (4.0 g, 10.6 mmol) with sodium azide (2.75 g, 42.2 mmol) generally according to the procedure described for Intermediate 24 gave (±)-(4-chloro-3,6,7,8-tetrahydro-2H-indeno[4,5-b]furan-2-yl)methyl azide. Treatment of the azide with sulfided platinum on carbon (5 wt. %, 0.63 g) followed by hydrogen chloride (3 mL, 4 M in isopropanol) generally according to the procedure described for Example 2 provided 2.1 g (76%) of (±)-1-(4-chloro-3,6,7,8-tetrahydro-2H-indeno[4,5-b]furan-2-yl)methanamine as a white solid, hydrochloride salt. mp 251-254° C.; Anal. calcd. for C12H14ClNOHCl: C, 55.40; H, 5.81; N, 5.38. Found: C, 55.10; H, 5.68; N, 5.29.
Sources & evidence
- ORD record
- ord-547ddd13347041229b42f9165b29610b
- Source dataset
- uspto-grants-2010_06
- Patent number
- US07728155B2
Reaction notes
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