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52164-35-9

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52164-35-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 52164-35-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,1,6 and 4 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 52164-35:
(7*5)+(6*2)+(5*1)+(4*6)+(3*4)+(2*3)+(1*5)=99
99 % 10 = 9
So 52164-35-9 is a valid CAS Registry Number.

52164-35-9Downstream Products

52164-35-9Relevant articles and documents

Lewis or Br?nsted acid-catalysed reaction of propargylic alcohol-tethered alkylidenecyclopropanes with indoles and pyrroles for the preparation of polycyclic compounds tethered with indole or pyrrole motif

Wei, Hao-Zhao,Yu, Liu-Zhu,Shi, Min

, p. 135 - 139 (2019)

We developed a facile synthetic method to access cyclopenta[b]naphthalene derivatives via the Lewis or Br?nsted acid catalysed cascade nucleophilic addition, electronic cyclization, ring-opening rearrangement of propargylic alcohol-tethered alkylidenecyclopropanes with indole and pyrrole derivatives. The reaction exhibited a broad substrate scope and good functional group tolerance under metal-free conditions, affording the desired products in moderate to good yields.

Synthesis of Diiodinated All-Carbon 3,3′-Diphenyl-1,1′-spirobiindene Derivatives via Cascade Enyne Cyclization and Electrophilic Aromatic Substitution

Li, Quanzhe,Yu, Liuzhu,Wei, Yin,Shi, Min

, p. 9282 - 9296 (2019/08/12)

A synthetic method for the construction of diiodinated all-carbon spirobiindene derivatives has been developed from the reaction of propargyl alcohol-tethered alkylidenecyclopropanes with iodine. The reaction proceeded through an iodination-initiated cascade intramolecular enyne cyclization and electrophilic aromatic substitution reaction process in 1,2-dichloroethane upon heating, giving desired spirocyclic products in moderate to excellent yields. Further transformation of the obtained products has also been presented.

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