Ammonium Chloride → 104675-50-5

HRID 2309446Notes

Reaction equation

HRID 2309446 reaction equation
[CH2:1]([NH:9][C:10]1[C:11]2[C:16]([N:17]=[C:18]3[C:23]=1[C:22](=[O:24])[CH2:21][CH2:20][CH2:19]3)=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH2:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[H-].[H-].[H-].[H-].[Li+].[Al+3].[NH4+].[Cl-].[C:33]([OH:40])(=[O:39])/[CH:34]=[CH:35]\[C:36]([OH:38])=[O:37]>O1CCCC1.CCOCC.C(O)(C)C>[C:33]([OH:40])(=[O:39])/[CH:34]=[CH:35]\[C:36]([OH:38])=[O:37].[CH2:1]([NH:9][C:10]1[C:11]2[C:16]([N:17]=[C:18]3[C:23]=1[CH:22]([OH:24])[CH2:21][CH2:20][CH2:19]3)=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH2:2][C:3]1[CH:4]=[CH:5][CH:6]=[CH:7][CH:8]=1

Participants

8

Reactant 4

HCID 25517Ammonium ChlorideHCID 444266Maleic AcidHCID 13756055HCID 13756055, compoundHCID 21226445Aluminium lithium hydride

Product 1

HCID 13756063104675-50-5Yield 32%

Reagents, catalysts & solvents 3

HCID 3283Diethyl EtherSolventHCID 3776IsopropanolSolvent2×HCID 8028TetrahydrofuranSolvent

Procedure

In 75 ml of dry tetrahydrofuran was dissolved 2.45 g of 9-phenethylamino-3,4-dihydroacridin-1-(2H)-one. The solution was cooled in ice and 7.0 ml (1 eq) of 1.1M LiAlH4 in Et2O was added dropwise. After 0.5 hour the reaction was complete. It was neutralized with 0.5 ml saturated NH4Cl solution and the resulting inorganic salts were filtered off. The filtrate was evaporated to a solid and the meleate salt was formed by adding a solution of 1.1 eq maleic acid in isopropanol to a suspension of the product in isopropanol. A solution formed initially but the salt precipitated out over 0.5 hour at ambient temperatures. The salt was filtered off and recrystallized from 5:1 EtOAc/MeOH and dried at 80° C. in vacuo to yield 1.14 g (32%) of a solid, melting point 169° C.

Workup

  1. temperatureThe solution was cooled in ice
  2. filtrationthe resulting inorganic salts were filtered off
  3. customThe filtrate was evaporated to a solid
  4. customthe meleate salt was formed
  5. customA solution formed initially
  6. customthe salt precipitated out over 0.5 hour at ambient temperatures
  7. filtrationThe salt was filtered off
  8. customrecrystallized from 5:1 EtOAc/MeOH
  9. customdried at 80° C. in vacuo

Sources & evidence

ORD record
ord-b7e27fa45a08411d961896d2d861eabc
Source dataset
uspto-grants-1987_09
Patent number
US04695573

Reaction notes

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