Flexible application of in synthetic route 137195-33-6

Here is just a brief introduction to this compound(137195-33-6)Name: 2,3-Dihydrocinnolin-4(1H)-one hydrochloride, more information about the compound(2,3-Dihydrocinnolin-4(1H)-one hydrochloride) is in the article, you can click the link below.

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 137195-33-6, is researched, SMILESS is O=C1CNNC2=C1C=CC=C2.[H]Cl, Molecular C8H9ClN2OJournal, Acta Poloniae Pharmaceutica called Synthesis of new derivatives of 1,2,5-triazepino[1,2-a]cinnoline. II. Synthesis of haloacyl derivatives of 4-oxo-1,2,3,4-tetrahydrocinnoline, Author is Kwapiszewski, Wincenty; Stanczak, Andrezej; Groszkowski, Stefan, the main research direction is cinnolone tetrahydro haloacyl derivative.Name: 2,3-Dihydrocinnolin-4(1H)-one hydrochloride.

Stirring 1,2,3,4-tetrahydrocinnolin-4-one (I) with BrCH2COCl (II) in H2O at 0° gave 76% III (X = Br, R = R1 = R2 = H). III (X = Cl, R1 = R2 = H; R = Cl, Me, MeO; R = R1 = H, R2 = Cl, Me; R = H, R1 = R2 = MeO) were prepared analogously in 49-74% yields from the appropriately substituted I and ClCH2COCl (IV). When I and II were refluxed 10 h in C6H6, diacetylation occurred to give 67% V (X = Br, R1 = R2 = H). V (X = Cl, R1 = R2 = MeO; R1 = H, R2 = Cl, Me) were prepared analogously. V (X = Cl, R1 = R2 = H) was obtained from the corresponding III and IV in the presence of Et3N. Refluxing I 10 h with ClCH2CH2COCl in C6H6 gave 54% VI, which was also obtained as a byproduct when a similar reaction was carried out at 0° in CHCl3; the main product (60% yield) was 2-(3-chloropropionyl)-1,2,3,4-tetrahydrocinnolin-4-one.

Here is just a brief introduction to this compound(137195-33-6)Name: 2,3-Dihydrocinnolin-4(1H)-one hydrochloride, more information about the compound(2,3-Dihydrocinnolin-4(1H)-one hydrochloride) is in the article, you can click the link below.

Reference:
Cinnoline – Wikipedia,
Cinnoline – an overview | ScienceDirect Topics