85642-04-2

Upstream product

• 373-44-4 1,8-diaminooctan 
• 90-02-8 salicylaldehyde 

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• 1166187-98-9 C₄₆H₄₆N₂O₆P₂ 

Relevant academic research and scientific papers

Crystal structures and mesomorphic properties of Schiff base homologs and derivatives, and magnetic properties of their dimeric and dinuclear copper(II) complexes

Three N2O4 Schiff. base homologs, H2L1 (n = 8), H2L3 ((n = 9), and H2L4 (n = 10) were obtained from the reactions of 2-HOC6H4CHO with H2N(CH2)8-10/sub

Magnetic, photophysical and thermal properties of complexes of iron(II) with structurally different Schiff bases

Three Fe(II) complexes of structurally different Schiff bases i.e., [Fe(L1)2](BF4) (1), [Fe2(OOC(CH2)14CH3)2(L2)(H2O)2] (2) and [Fe2(O

Influences of polarizability effect of alkyl group and homoring competition effect of substituents on the NMR spectra of salen-type Schiff base

Salen-type Schiff bases are a kind of important compounds and are widely used. In order to explore the effect of alkyl groups and substituents attached to aromatic ring on the chemical shifts, 63 title compounds were synthesized. Their 1H NMR and 13C NMR spectra were obtained; and the effects of the alkyl chain length and substituents on the chemical shifts (δH(CH=N), δC(CH=N), δH(OH), and δC(C-OH)) were studied. The results show that (1) the alkyl polarizability effect index (PEI) has an important influence on the chemical shifts of the above four atoms, with the increase of PEI, the values of δH(CH=N) and δc(CH=N) decrease, and the values of δH(OH) and δC(C-OH) increase. (2) The influence of substituent X attached to aromatic ring on the chemical shift is related to its position by taking OH or CH=N as reference. As for the effect of substituent on the chemical shifts, the effect of Hammett constant σ(X)-OH and excited-state substituent parameter (Formula presented.) with OH as reference are different from that ofσ(X)-CH=N and (Formula presented.) with CH=N as reference, and there is a “homoring competition effect” of the substituent. (3) The effect of the cross-interaction between X and OH on the chemical shift is also significantly different due to the different position of X. Quantitative correlation equations against chemical shifts were built for the four atoms, and the stability and prediction ability of the obtained equations were confirmed by leave-one-out cross validation.

PHOSPHORUS-BASED OXAZINE COMPOUNDS AND PREPARATION METHOD OF THE SAME

The present invention provides phosphorus-based oxazine compounds and the preparation method thereof. The phosphorus-based oxazine compounds of the present invention can provide better fire-resistant characteristics, while the preparation method for the phosphorus-based oxazine compound of the present invention can offer high yields and/or high purity phosphorus-based oxazine compounds.