Sulfuryl chloride → 4-Chloro-4-methyl-5-methylene-1,3-dioxolan-2-one
反応式
[CH3:1][C:2]1[O:3][C:4](=[O:8])[O:5][C:6]=1[CH3:7].S(Cl)([Cl:12])(=O)=O>C(Cl)Cl>[Cl:12][C:2]1([CH3:1])[C:6](=[CH2:7])[O:5][C:4](=[O:8])[O:3]1参加物
4
実験手順
To a solution of 50 g of 4,5-dimethyl-1,3-dioxolene-2-one (IV)(Synthesized by the method described in Tetrahedron Letters, 1701-1704 (1972)) in 350 ml of methylene chloride was added 65 g of sulfuryl chloride dropwise over 1 hour at 40°-42° C. The mixture was stirred for one hour at the same temperature and then evaporated in vacuo to remove the solvent. The resulting residue was distilled in vacuo to obtain 42.1 g (65% of theory) of 4-chloro-4-methyl-5-methylene-1,3-dioxolane-2-one (III) as a colorless oil.
後処理
- customevaporated in vacuo
- customto remove the solvent
- distillationThe resulting residue was distilled in vacuo
出典と根拠
- ORDレコード
- ord-b8a344833fd34e68a3868ac30028bb14
- 出典データセット
- uspto-grants-1985_11
- 特許番号
- US04554358
反応ノート
読み込み中…