2,3-Dihydro-1H-pyrazolo[1,2-b]phthalazine-5,10-dione

Base Information

• Chemical Name: 2,3-Dihydro-1H-pyrazolo[1,2-b]phthalazine-5,10-dione
• CAS No.: 21769-81-3
• Molecular Formula: C11H10N2O2
• Molecular Weight: 202.213
• DSSTox Substance ID: DTXSID80577124
• Wikidata: Q82467052
• Mol file: 21769-81-3.mol

Synonyms:2,3-Dihydro-1H-pyrazolo[1,2-b]phthalazine-5,10-dione;21769-81-3;DTXSID80577124

Chemical Property of 2,3-Dihydro-1H-pyrazolo[1,2-b]phthalazine-5,10-dione

Chemical Property:

• XLogP3: 0.9
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 202.074227566
• Heavy Atom Count: 15
• Complexity: 286

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

• Canonical SMILES: C1CN2C(=O)C3=CC=CC=C3C(=O)N2C1

Technology Process of 2,3-Dihydro-1H-pyrazolo[1,2-b]phthalazine-5,10-dione

There total 2 articles about 2,3-Dihydro-1H-pyrazolo[1,2-b]phthalazine-5,10-dione which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 92.0%

2-(3-Hydroxypropyl)-4-(2'-hydroxyethylamino)phthalazin-1(2H)-one (133056-80-1) → 2-bromoethylamine (107-09-5) + 2,3-Dihydro-1H-pyrazolo<1,2-b>phthalazin-5,10(4H,11H)-dione (21769-81-3)

Guidance literature:

With hydrogen bromide; for 0.0833333h; Heating;

DOI:10.1016/S0040-4020(01)87114-3

Reference yield:

2-(3-Hydroxypropyl)-4-(2'-hydroxyethylamino)phthalazin-1(2H)-one (133056-80-1) + benzoyl chloride (98-88-4) → N-(2-Bromo-ethyl)-benzamide (27110-61-8) + 2,3-Dihydro-1H-pyrazolo<1,2-b>phthalazin-5,10(4H,11H)-dione (21769-81-3)

Guidance literature:

With sodium hydroxide; hydrogen bromide; Yield given. Multistep reaction. Yields of byproduct given; 1) 5 min, reflux 2) 20 min, T < 20 deg C;

DOI:10.1016/S0040-4020(01)87114-3

upstream raw materials:

2-(3-Hydroxypropyl)-4-(2'-hydroxyethylamino)phthalazin-1(2H)-one

benzoyl chloride