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1197-09-7

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1197-09-7 Usage

Uses

3'',4''-Dihydroxyacetophenone is an active constituent of Chinese medicine and also has antimelanogenic actiivity.

Preparation

Preparation by Fries rearrangement of pyrocatechol diacetate with aluminium chloride in nitrobenzene between 75° and 95° (80%)(43%)or in chlorobenzene at 80° (83%).

Check Digit Verification of cas no

The CAS Registry Mumber 1197-09-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,9 and 7 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1197-09:
(6*1)+(5*1)+(4*9)+(3*7)+(2*0)+(1*9)=77
77 % 10 = 7
So 1197-09-7 is a valid CAS Registry Number.
InChI:InChI=1/C8H8O3/c1-5(9)6-2-3-7(10)8(11)4-6/h2-4,10-11H,1H3

1197-09-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 10, 2017

Revision Date: Aug 10, 2017

1.Identification

1.1 GHS Product identifier

Product name 3',4'-dihydroxyacetophenone

1.2 Other means of identification

Product number -
Other names 3,4-Dihydroxyacetophenone

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1197-09-7 SDS

1197-09-7Relevant articles and documents

Switchable columnar metallomesogens. New helical self-assembling systems

Barberá,Iglesias,Serrano,Sierra,De La Fuente,Palacios,Pérez-Jubindo,Vázquez

, p. 2908 - 2918 (1998)

Chiral oxovanadium(IV), copper(II), and palladium(II) β-diketonates show a room-temperature columnar mesophase which undergoes ferroelectric switching. All the compounds were obtained as liquid crystals at room temperature, and crystallization or melting processes were not detected by differential scanning calorimetry carried out to -20 °C. The mesophase was investigated by optical microscopy, DSC and X-ray diffraction, and identified as a rectangular columnar (P21). The flower like texture observed for all the compounds led us to deduce a high tilt angle (ca. 40°) of the molecules with respect to the column axis. Circular dichroism has confirmed the existence of a helical arrangement within the column. This result is in accordance with the so-called columnar mode found at low frequencies (ca. 10-3 Hz) in dielectric spectroscopy studies electrooptical response of these materials has been examined by means of a photomultiplier. The results obtained can be explained by considering a strong influence of the high tilt angle found in the mesophase.

Preparation and Characterization of Tetraaza[14]annulene and its Nickel(II) and Copper(II) Complexes with Crown Ether Functionalities

Sakata, Kazunori,Shimoda, Manabu,Hashimoto, Mamoru

, p. 1593 - 1598 (1996)

Three new organic hosts are described that contain a tetraaza[14]annulene core to which two crown ether voids are attached. These hosts include a free base tetraaza[14]annulene and/or its complexes with benzo-15-crown-5 rings. The crown tetraaza[14]annulene is synthesized from tetraaza[14]annulene and 4′-chloroformylbenzo-15-crown-5. Its nickel(II) and copper(II) complexes are prepared in a similar manner as above. In solution the compounds do not tend to form aggregates. However, aggregation is affected by the presence of alkali-metal salts, which coordinate to the crowns. Li+ and Na+ cations with diameters that match the diameters of the crown ether rings form 1:2 host-guest complexes. Complexes with 2:2 host-guest stoichiometry are formed when the diameters of K+ and Cs+ cations exceed that of the crown ether rings. Nevertheless, it is weak for the present macrocycle and its complexes to be inclined to form dimers owing to the steric hindrance of the substituent groups and owing to restraining the rotation of the carbonyl bond connecting the crown ether group.

Birnbaum,Powell

, p. 139 (1939)

Iron-catalyzed domino decarboxylation-oxidation of α,β-unsaturated carboxylic acids enabled aldehyde C-H methylation

Gong, Pei-Xue,Xu, Fangning,Cheng, Lu,Gong, Xu,Zhang, Jie,Gu, Wei-Jin,Han, Wei

, p. 5905 - 5908 (2021/06/18)

A practical and general iron-catalyzed domino decarboxylation-oxidation of α,β-unsaturated carboxylic acids enabling aldehyde C-H methylation for the synthesis of methyl ketones has been developed. This mild, operationally simple method uses ambient air as the sole oxidant and tolerates sensitive functional groups for the late-stage functionalization of complex natural-product-derived and polyfunctionalized molecules.

Thiols Act as Methyl Traps in the Biocatalytic Demethylation of Guaiacol Derivatives

Grimm, Christopher,Kroutil, Wolfgang,Pompei, Simona,Schiller, Christine,Schober, Lukas

supporting information, p. 16906 - 16910 (2021/07/02)

Demethylating methyl phenyl ethers is challenging, especially when the products are catechol derivatives prone to follow-up reactions. For biocatalytic demethylation, monooxygenases have previously been described requiring molecular oxygen which may cause oxidative side reactions. Here we show that such compounds can be demethylated anaerobically by using cobalamin-dependent methyltransferases exploiting thiols like ethyl 3-mercaptopropionate as a methyl trap. Using just two equivalents of this reagent, a broad spectrum of substituted guaiacol derivatives were demethylated, with conversions mostly above 90 %. This strategy was used to prepare the highly valuable antioxidant hydroxytyrosol on a one-gram scale in 97 % isolated yield.

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