Detail of "16854-67-4"

CAS Number:
16854-67-4
Name:
2H-1-Benzothiopyran-2-one,4-hydroxy-
Superlist Name:
4-Hydroxylthiocoumarin
Molecular Structure:
Formula:
C₉H₆O₂S
Molecular Weight:
178.21
Synonyms:
1-Thiocoumarin,4-hydroxy- (6CI,7CI,8CI);4-Hydroxy-1-(2H)-benzothiopyran-2-one;4-Hydroxy-1-thiacoumarin;4-Hydroxy-1-thiocoumarin;4-Hydroxy-2-oxo-2H-1-benzothiopyran;4-Hydroxy-2H-1-benzothiopyran-2-one;4-Hydroxythiocoumarin;
Density:
1.478 g/cm³
Boiling Point:
307.4 °C at 760 mmHg
Flash Point:
139.7 °C

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Synthesis of 3-nitro-4-amino- and 3,4-diaminothiocoumarins: Synthesis of 3-nitro-4-amino- and 3,4-diaminothiocoumarins. Savel'ev, V. L.; Afanas'eva, T. G.; Zagorevskii, V. A. (Inst. Farmakol., Moscow, USSR). Khim. Geterotsikl. Soedin., (1), 43-7 (Russian) 1978. 16854-67-4 which is the cas registry number of some chemical is mentioned. CODEN: KGSSAQ. ISSN: 0453-8234. DOCUMENT TYPE: Journal CA Section: 27 (Heterocyclic Compounds (One Hetero Atom)) Nitration of thiocoumarin I (R = OH, R1 = H) gave 94% I (R = OH, R1 = NO2), which was treated with POCl3 to give 93% I (R = Cl, R1 = NO2) (II). Reaction of II with HNR2R3 (NR2R3 = morpholino, piperidino; R2 = H, R3 = H, Me, Bu, CMe3, benzyl, Ph; R2 = R3 = Et) gave 65-95% III, which were reduced to give 56-98% III (R1 = NH2). .