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

HRID 497746ノート

反応式

HRID 497746 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-5307042b71a74b8cb709576126a25186
出典データセット
uspto-grants-2005_09
特許番号
US06949646B2

反応ノート

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