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120113-93-1

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120113-93-1 Usage

Chemical Description

2-(methoxymethoxy)-2-phenylethanal is an aldehyde used in the same synthesis.

Check Digit Verification of cas no

The CAS Registry Mumber 120113-93-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,0,1,1 and 3 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 120113-93:
(8*1)+(7*2)+(6*0)+(5*1)+(4*1)+(3*3)+(2*9)+(1*3)=61
61 % 10 = 1
So 120113-93-1 is a valid CAS Registry Number.

120113-93-1Relevant articles and documents

The influence of α-coordinating groups of aldehydes on E/Z-selectivity and the use of quaternary ammonium counter ions for enhanced E-selectivity in the Julia–Kocienski reaction

Rehman, Mintu,Surendran, Sravya,Siddavatam, Nagendra,Rajendar, Goreti

supporting information, p. 329 - 333 (2022/01/20)

Modified reaction conditions for improved E-selectivity of olefins in the Julia–Kocienski reaction of aldehydes having α-coordinating substituents are demonstrated. The chelating groups in aldehydes are expected to stabilize the syn-transition state with metal ions, whereas the weakly coordinating quaternary ammonium ions are devoid of all possible chelating interactions to enhance E-selectivity. A systematic investigation is presented to study the size of the neighbouring protecting groups of aldehydes and their chelation effect on E/Z-selectivity in the Julia–Kocienski reaction.

Synthesis of 2,5-dihydrofurans via alkylidene carbene insertion reactions

Walker, Louise F.,Bourghida, Ahmed,Connolly, Stephen,Wills, Martin

, p. 965 - 981 (2007/10/03)

The insertion reaction of alkylidene carbenes is demonstrated to be an effective method for the synthesis of 2,5-dihydrofuran ring systems. The best results have been obtained on substrates containing electron-withdrawing substituents, which appear less prone to the competing rearrangement reaction. This insight has led to the development of a new method for the synthesis of the core structure of the squalestatin-zaragozic acid natural products.

Acyclic stereoselection in the tertiary amine-catalysed addition of activated vinyl systems (Baylis-Hillman reaction) to protected chiral α-hydroxy and α-amino aldehydes

Manickum, Thavrin,Ross, Gregory H. P.

, p. 1 - 16 (2007/10/03)

The non chelation-controlled aldol-type addition of the ambident vinyl α anions derived from acrylic esters and methyl vinyl ketone to a series of protected chiral α-hydroxy and α-amino aldehydes has been investigated in order to assess some of the factors which contribute to the control of the diastereofacial selectivity.Whlist the α-methylene-β,γ-disubstituted carbonyl products showed a general preference for selectivity, some examples of syn predominance were made possible via a 'substituent tuning'approach.The observed diastereomer ratios have been interpreted in terms of the Felkin model and the Anh-Eisenstein proposals for 1,2-asymmetric induction.Simple steric effects appear to be as important as ?-orbital energies in the designation of the large 'anti group' for the application of these transition-state interpretations.Attempts to improve the overall induction via double diastereoselection approach, which combines the 1,5-induction of chiral acrylates with the 1,2-induction already present, were largely inconclusive.Methods for the routine NMR assignment of the relevant stereo-substructures have been assessed and the use of novel complementary technique is described.

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