Sodium Azide → HCID 86599291, compound

HRID 2116291Notes

Reaction equation

CC1C=CC(S(O[CH2:12][CH:13]2[CH2:17][C:16]3[CH:18]=[CH:19][C:20]([Cl:29])=[C:21]([C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=4[Cl:28])[C:15]=3[O:14]2)(=O)=O)=CC=1.[N-:30]=[N+:31]=[N-:32].[Na+]>>[N:30]([CH2:12][CH:13]1[CH2:17][C:16]2[CH:18]=[CH:19][C:20]([Cl:29])=[C:21]([C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=3[Cl:28])[C:15]=2[O:14]1)=[N+:31]=[N-:32]

Participants

Reactant 2

HCID 33557Sodium Azide

HCID 86599290HCID 86599290, compound

Product 1

HCID 86599291HCID 86599291, compoundYield 99%

Procedure

Treatment of 1-bromo-2-chlorobenzene (5.0 g, 26.88 mmol) with (2-chloro-6-methyoxyphenyl)boronic acid (15.6 g, 80.64 mol) generally according to the procedure described for Intermediate 37 afforded 5.0 g (73%) of 6-chloro-2′-chlorobiphenyl-2-yl methyl ether. Treatment of 6-chloro-2′-methylbiphenyl-2-yl methyl ether with hydrogen bromide (60 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 395 afforded a brown oil. The oil was reacted with sodium hydride (1.05 g, 26.35 mmol) and allyl bromide (3.19 g, 26.35 mmol) followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-6-chloro-2′-chlorobiphenyl-2-ol. Treatment of 3-allyl-6-chloro-2′-chlorobiphenyl-2-ol (2.8 g, 10.03 mmol) with m-chloroperoxybenzoic acid (4.6 g, 15.0 mmol, 77%) and potassium carbonate (1.6 g, 12.0 mmol) generally according to the procedure described for Intermediate 9 afforded 2.2 g (74%) of (±)-[7-(2-chlorophenyl)-6-chloro-2,3-dihydro-1-benzofuran-2-yl]methanol. Treatment (±)-[7-(2-chlorophenyl)-6-chloro-2,3-dihydro-1-benzofuran-2-yl]methanol (1.6 g, 5.42 mmol) with p-toluenesulfonyl chloride (1.55 g, 8.13 mmol) generally according to the procedure described for Intermediate 10 gave 2.1 g (86%) of (±)-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a colorless oil. Treatment of (±)-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.2 g, 0.44 mmol) with sodium azide (0.2 g, 3.08 mmol) generally according to the procedure described for Intermediate 98 afforded 0.14 g, (99%) of (±)-2-(azidomethyl)-7-(2-chlorophenyl)-6-chloro-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-7-(2-chlorophenyl)-6-chloro-2,3-dihydro-1-benzofuran (0.14 g, 0.43 mmol) in tetrahydrofuran (10 mL) with polymer-supported triphenylphosphine (0.3 g, 1.14 mmol) generally according to the procedure described for Example 154 provided 0.036 g (24%) of (±)-{[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp 221-223° C.

Sources & evidence

ORD record: ord-cc61e2e1122d4d76988b5caab16f412e
Source dataset: uspto-grants-2008_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07435837B2

Reaction notes

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