Phosphorus oxychloride → 5-Chlorotetrazolo(1,5-a][1,7]naphthyridine

HRID 636591ノート

反応式

HRID 636591 の反応式
[N:1]1[N:5]2[C:6]3[C:11]([C:12](O)=[CH:13][C:4]2=[N:3][N:2]=1)=[CH:10][CH:9]=[N:8][CH:7]=3.P(Cl)(Cl)([Cl:17])=O>>[Cl:17][C:12]1[C:11]2[C:6](=[CH:7][N:8]=[CH:9][CH:10]=2)[N:5]2[N:1]=[N:2][N:3]=[C:4]2[CH:13]=1

参加物

3

反応物 2

HCID 24813Phosphorus oxychlorideHCID 178515416HCID 178515416、化合物

生成物 1

HCID 120158005-Chlorotetrazolo(1,5-a][1,7]naphthyridine

反応条件

温度
90 °C

実験手順

A suspension of tetrazolo[1,5-a][1,7]naphthyridin-5-ol (3.5 g) in phosphorous oxychloride (15 mL) was heated at 90° C. for 2 hours. The reaction mixture was concentrated under vacuum. The residue was poured into ice water, dichloromethane was added followed by the addition of 10% sodium hydroxide to neutral pH. The product was partitioned into dichloromethane. The dichloromethane layer was separated, dried over magnesium sulfate then concentrated under vacuum to provide 3.8 g of 5-chlorotetrazolo[1,5-a][1,7]naphthyridine as a solid, m.p. 176-177° C. Analysis: Calculated for C8H4ClN5: % C, 46.73; % H, 1.96; % N, 34.06; Found: % C, 46.80; % H, 2.16; % N, 34.45.

後処理

  1. concentrationThe reaction mixture was concentrated under vacuum
  2. additionThe residue was poured into ice water, dichloromethane
  3. additionwas added
  4. additionfollowed by the addition of 10% sodium hydroxide to neutral pH
  5. customThe product was partitioned into dichloromethane
  6. customThe dichloromethane layer was separated
  7. dry with materialdried over magnesium sulfate
  8. concentrationthen concentrated under vacuum

出典と根拠

ORDレコード
ord-d91b6cf0d208467d8b53e6df65d66f9b
出典データセット
uspto-grants-2001_02
特許番号
US06194425B1

反応ノート

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