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97691-22-0

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97691-22-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97691-22-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,6,9 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 97691-22:
(7*9)+(6*7)+(5*6)+(4*9)+(3*1)+(2*2)+(1*2)=180
180 % 10 = 0
So 97691-22-0 is a valid CAS Registry Number.

97691-22-0Downstream Products

97691-22-0Relevant articles and documents

Cross Mannich Reaction of Aldehydes; Efficient Synthesis of Substituted Pyridines

Winter, Andreas,Risch, Nikolaus

, p. 2667 - 2670 (2007/10/03)

Symmetrically and unsymmetrically substituted pyridines were obtained in highly efficient one-pot procedures starting from α-unbranched aldehydes and iminium salts.

Thermal Rearrangement of N-Arylmethyl- and N-Alkyl-2,2-dihalogenocyclopropyl Imines

Kagabu, Shinzo,Ando, Chihaya,Ando, Junko

, p. 739 - 752 (2007/10/02)

An extended study of the thermal isomerization of 1-substituted 2,2-dihalogenocyclopropyl imines is reported.The thermolysis of N-arylmethyl-2,2-dichlorocyclopropanecarbaldimines 15a-h produces 2-aryl- 16a-h and 2-aryl-4-chloro-pyridine derivatives 17a-h, while N-cyclopropyl imines 15i, j yielded N-alyklchloropyrroles.The 2,2-dibromocyclopropane analogue undergoes thermolysis at lower temperatures.An ionic mechanism triggered by the halide ion dissociation is proposed for the thermal rearrangement on the basis of a study using deuterated imine 15m, and the effects of additives and solvents.On the other hand, difluorocyclopropyl imine undergoes a homolytic cleavage of cyclopropane 1,3-bond with lower activation energy than the dichlorocyclopropyl imine, and afforded the N-alykl-3-fluoropyrrole derivative preferentially.

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