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57573-45-2

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57573-45-2 Usage

Chemical Properties

White Solid

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Protected Amphetamine derivative

Check Digit Verification of cas no

The CAS Registry Mumber 57573-45-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,5,7 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 57573-45:
(7*5)+(6*7)+(5*5)+(4*7)+(3*3)+(2*4)+(1*5)=152
152 % 10 = 2
So 57573-45-2 is a valid CAS Registry Number.

57573-45-2Relevant articles and documents

Chemoenzymatic dynamic kinetic resolution of primary amines catalyzed by CAL-B at 38-40°c

Poulhes, Florent,Vanthuyne, Nicolas,Bertrand, Michele P.,Gastaldi, Stephane,Gil, Gerard

body text, p. 7281 - 7286 (2011/10/10)

The (R)-selective chemoenzymatic dynamic kinetic resolution of primary amines was performed at 38-40 °C in MTBE, in good to high yields and with high enantiomeric excesses. These reactions associating CAL-B to octanethiol as radical racemizing agent were carried out in the presence of methyl β-methoxy propanoate as acyl donor, under photochemical irradiation at 350 nm in glassware.

Synthesis of Enantiopure Homoallylic Alcohols and Ethers by Diastereoselective Allylation of Aldehydes

Tietze, Lutz F.,Schiemann, Kai,Wegner, Christoph,Wulff, Christian

, p. 1164 - 1172 (2007/10/03)

Enantiopure homoallylic alcohols 5, which are important building blocks in organic synthesis, are obtained with an ee of greater than 99percent and a yield of 75-95percent by cleavage of the secondary homoallylic ethers 4 using sodium in liquid ammonia.The ethers 4 are formed with excellent diastereoselectivity and in 52-89percent yield by treatment of the aldehydes 1 with the trimethylsilyl ether of N-trifluoroacetylnorpseudoephedrine (2) in the presence of a catalytic amount of TMS triflate or TMS borontriflate, followed by addition of allylsilane 3.Nearly all achiral aliphatic aldehydes employed gave a diastereoselectivity of over 99:1.With the chiral aldehydes 24, the difference between matched and mismatched pairs was low; this reveals that there is strong reagent control.- Keywords: allylations; allylsilanes; double stereodifferentiation; ephedrine; homoallylic alcohols