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9-(2-chlorobenzylidene)-9H-fluorene is a chemical compound with the molecular formula C19H13Cl. It is a derivative of fluorene, a polycyclic aromatic hydrocarbon, and features a 2-chlorobenzylidene group attached to the 9-position of the fluorene core. 9-(2-chlorobenzylidene)-9H-fluorene is characterized by its yellow crystalline appearance and is primarily used in the synthesis of various organic compounds and pharmaceuticals. Due to its complex structure and potential applications, it is an important molecule in the field of organic chemistry.

1643-49-8

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1643-49-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1643-49-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,4 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1643-49:
(6*1)+(5*6)+(4*4)+(3*3)+(2*4)+(1*9)=78
78 % 10 = 8
So 1643-49-8 is a valid CAS Registry Number.

1643-49-8SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 9-[(2-chlorophenyl)methylidene]fluorene

1.2 Other means of identification

Product number -
Other names 9-(2-Chlor-benzyliden)-fluoren

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 -
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More Details:1643-49-8 SDS

1643-49-8Relevant academic research and scientific papers

Synthesis of 9-Fluorenylidenes via Pd-Catalyzed C-H Vinylation with Vinyl Bromides

Yang, Shuai,Zhang, Yanghui

supporting information, p. 7746 - 7750 (2021/10/12)

A facile and efficient approach for the synthesis of 9-fluorenylidenes has been developed via the palladium-catalyzed cross-coupling of 2-iodobiphenyls and vinyl bromides. The reaction involves the C-H activation of 2-iodobiphenyls and dual C-C bond formations. A range of 9-fluorenylidene derivatives, including diphenyldibenzofulvenes, can be synthesized with the reaction.

An N-heterocyclic carbene-catalyzed switchable reaction of 9-(trimethylsilyl)fluorene and aldehydes: Chemoselective synthesis of dibenzofulvenes and fluorenyl alcohols

Ma, Yu-Chuan,Luo, Jin-Yun,Zhang, Shi-Chu,Lu, Shu-Hui,Du, Guang-Fen,He, Lin

supporting information, p. 3717 - 3721 (2021/05/04)

An N-heterocyclic carbene-catalyzed synthesis of dibenzofulvenes and fluorenyl alcohols was developed. In the presence of 10 mol% NHC (1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) and 4 ? molecular sieves, 9-(trimethylsilyl)fluorene undergoes an olef

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