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142560-84-7

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142560-84-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142560-84-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,5,6 and 0 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 142560-84:
(8*1)+(7*4)+(6*2)+(5*5)+(4*6)+(3*0)+(2*8)+(1*4)=117
117 % 10 = 7
So 142560-84-7 is a valid CAS Registry Number.

142560-84-7Downstream Products

142560-84-7Relevant articles and documents

Diastereoselective Diels-Alder Cycloadditions with Chiral 1-(Alkylsulfinyl)-2-nitroalkenes

Fuji, Kaoru,Tanaka, Kiyoshi,Abe, Hitoshi,Matsumoto, Kiyoshi,Harayama, Takashi,et al.

, p. 2211 - 2218 (2007/10/02)

Several chiral 2-nitro-1-sulfinylalkenes were prepared and examined for their utility as dienophiles for asymmetric cycloaddition.Trisubstituted dienophiles 3-6 undergo diastereoselective cycloaddition with cyclopentadiene in the presence of Lewis acids.Even the tetrasubstituted chiral sulfinyl dienophiles 1 and 2 could be coerced into undergoing cycloaddition to afford the cycloadducts in high yield without concomitant elimination if the reaction was conducted under high pressure.Generally, the Z-sulfinyl dienophiles 1-4 showed higher diastereo- and endo/exo-selectivity than the E-dienophiles 5 and 6.

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