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2-Bromobenzo(b)thiophene → rac-[2-(Benzo[b]thiophen-2-yl)ethynyl]-3,4-dihydro-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol
関与物質
| 役割 | 名称 | HCID | 仕込み量 |
|---|---|---|---|
| 反応物 | 2-Bromobenzo(b)thiophene | HCID 94786 | — |
| 反応物 | rac-3,4-dihydro-2-ethynyl-2,5,7,8-tetramethyl-2H-1-benzopyran-6ol | HCID 14478563 | — |
| 生成物 | rac-[2-(Benzo[b]thiophen-2-yl)ethynyl]-3,4-dihydro-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol | HCID 15171820 | — |
反応手順
Reaction of rac-3,4-dihydro-2-ethynyl-2,5,7,8-tetramethyl-2H-1-benzopyran-6-ol with 2-bromobenzo[b]thiophene under the conditions described in example 16 gave after chromatographic isolation and crystallization from ether/hexane colorless crystals with m.p. 120°-123° C.
情報源と証拠
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| 特許番号 | US05260294 |
| 出典データセット | uspto-grants-1993_11 |
| ORD ID | ord-a617309efa024efc821d88d8188e17b2 |
| 出典メモ | uspto-grants-1993_11 |