A kind of diaryl phosphin hydrazide kind compound and preparation method thereof
Technical field
The present invention relates to the field of chemical synthesis, and in particular to a kind of preparation method of diaryl phosphin hydrazide kind compound.
Background technique
Phosphono hydrazine class compound fungicide, growth regulator, in terms of have a good application prospect.It is classical
Atherton-Todd reaction can synthesize phosphono hydrazine class compound, but its reaction substrate is confined to dialkyl group phosphine oxide and O,
O- dialkyl phosphonate etc., the synthesis of diaryl phosphono hydrazine class compound and diaryl phosphine oxide can not react.In addition, phosphono hydrazine
Class compound can also be synthesized by " two-step method ", first aryl hydrazine class compound and phosphorus dichloride effect, isolated
First step product, then the product is in oxidants hydrogen peroxide (Polyhedron 2003 (22), 1397-1405) or excess
Alkali potassium carbonate (J. Am. Chem. Soc. 2008,130,5542-5551) effect occur oxidation reaction, be finally recovered
To phosphono hydrazine class compound.Synthesis step is more complex, and last handling process is relatively complicated.That is announced in the present invention shines in visible light
It penetrates down using fragrant hydrazine class compound and diaryl oxygen phosphorus as the direct synthesis of diaryl phosphono hydrazine class compound of raw material single step reaction
Method is temporarily without pertinent literature and patent report.
Summary of the invention
The invention proposes a kind of preparation methods of diaryl phosphin hydrazide kind compound, provide a kind of mild, cheap, simple
Visible light catalytic method carry out synthesis of diaryl phosphono hydrazine class compound.The synthesising method reacting condition is mild, shines in visible light
Under the conditions of, handy and safe, raw material and catalyst are cheap and easy to get, are a kind of environmental-friendly green synthesis methods.
It realizes the technical scheme is that a kind of diaryl phosphin hydrazide kind compound, structural formula are as follows:
Wherein, R1For methoxyl group, methyl, fluorine, cyano, chlorine, nitro.
The preparation method of the diaryl phosphin hydrazide kind compound, steps are as follows: by aryl hydrazine, diaryl oxygen phosphorus and molten
Agent is added in reaction tube, and alkali and photosensitizer are then added thereto, anti-in air, under stirring condition under visible light illumination
It answers, obtains diaryl phosphin hydrazide kind compound.
The structural formula of the aryl hydrazine is as follows:
Wherein R1For methoxyl group, methyl, fluorine, cyano, chlorine, nitro.
The structural formula of the diaryl oxygen phosphorus is as follows:
Wherein R2For ethyl, normal-butyl, isopropyl, phenyl.
The solvent is acetonitrile or dimethyl sulfoxide;Alkali is cesium carbonate or triethylene diamine;Photosensitizer is Bangladesh's rose
It is rare red.
The aryl hydrazine, diaryl oxygen phosphorus, alkali and photosensitizer molar ratio be 1.1:(1-2): 1.0:0.1.
The reaction temperature is 25-45 DEG C, and the reaction time is 5-9 h.
The reaction formula of preparation method of the present invention is as follows:
The beneficial effects of the present invention are: the present invention provides a kind of preparation method of diaryl phosphin hydrazide kind compound, the side
Method does not need to carry out two step operations, and two virtues are efficiently synthesized as catalyst using photosensitizer cheap and easy to get under visible light illumination
Base phosphono hydrazine class compound.Easy to operate and safe involved in this method, mild with reaction condition, good economy performance, environment friend
Good advantage.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Those of ordinary skill in the art's every other embodiment obtained under that premise of not paying creative labor, belongs to this hair
The range of bright protection.
Embodiment 1
The preparation method of diaryl phosphin hydrazide kind compound, steps are as follows:
Photosensitizer Bengal rose red (10 mol%) is added in 25 mL reaction tubes, cesium carbonate (1 equiv.), solvent second
1.5 mL of nitrile, 0.55 mmol of phenylhydrazine, 1.0 mmol of diphenyl phosphate oxygen, mixing control reaction temperature is 45 DEG C in air, in
After being reacted 9 hours under white light, the isolated final product of silica gel column chromatography, by diphenyl phosphate oxygen mole be 100 % in terms of,
The yield of final product is 55 %.
Concrete outcome is as follows:
1H NMR (DMSO, 400 MHz)δ = 7.87-7.94 (m, 4H), 7.60 – 7.36 (m, 8H), 7.14
(m, 2H), 7.08 – 6.96 (m, 2H), 6.76 – 6.63 (t, 1H); 13C NMR(CDCl3, 100 MHz):
(101 MHz, δ =150.84 (d, J = 5.2 Hz), 133.72, 132.73 – 132.24 (m), 132.05 (d,
J = 2.5 Hz), 129.89 – 127.07 (m), 118.83, 113.41。
Embodiment 2
The preparation method of diaryl phosphin hydrazide kind compound, steps are as follows:
Photosensitizer Bengal rose red (10 mol%) is added in 25 mL reaction tubes, cesium carbonate (1 equiv), solvent acetonitrile
1.5 mL, 4- procarbazine, 0.55 mmol, 1.0 mmol of diphenyl phosphate oxygen, mixing control reaction temperature are 45 DEG C, Yu Baiguang
After lower reaction 9 hours of irradiation, the isolated final product of silica gel column chromatography.
Concrete outcome is as follows:
1H NMR (CDCl3, 400 MHz) and δ=7.98 (ddt, J=11.9,7.0,1.5 Hz, 4H), 7.59-
7.50 (m, 2H), 7.46 (ddd, J = 7.0, 5.6, 2.6 Hz, 4H), 7.04 (d, J = 8.2 Hz, 2H),
6.96 – 6.88 (m, 2H), 5.78 (d, J = 2.7 Hz, 1H), 5.04 (d, J = 16.7 Hz, 1H),
2.28 (s, 3H); 13C NMR (CDCl3, 101 MHz) δ = 146.12 (d, J = 7.0 Hz), 131.72 (d,
J = 104 Hz), 132.15 (d, J = 9.6 Hz), 129.92, 129.60, 128.59 (d, J = 12.5 Hz),
113.54, 58.45。
Embodiment 3
The preparation method of diaryl phosphin hydrazide kind compound, steps are as follows:
Photosensitizer Bengal rose red (10 mol%) is added in 25 mL reaction tubes, cesium carbonate (1 equiv), solvent diformazan
1.5 mL, 3- procarbazine of base sulfoxide, 0.5 mmol, 1.0 mmol of hexichol oxygen phosphorus, mixing control reaction temperature is 35 in air
DEG C, after being reacted 2 hours under white light, the isolated final product of silica gel column chromatography.
Concrete outcome is as follows:
1H NMR (DMSO-d6, 400 MHz) δ = 7.91 (ddt, J = 11.5, 6.6, 1.6 Hz, 4H), 7.64
– 7.43 (m, 6H), 7.45 – 7.32 (m, 2H), 7.02 (t, J = 7.7 Hz, 1H), 6.89 – 6.77
(m, 2H), 6.51 (d, J = 7.3 Hz, 1H), 2.22 (s, 3H); 13C NMR (DMSO-d6, 101 MHz) δ
= 150.84 (d, J = 5.2 Hz), 137.84, 133.75, 132.45 (d, J = 8.5 Hz), 132.04,
128.84 (d, J = 12.3 Hz), 119.73, 113.99, 110.71, 21.84。
Embodiment 4
The preparation method of arylphosphonic acid ester type compound, steps are as follows:
Photosensitizer Bengal rose red (10 mol%) is added in 25 mL reaction tubes, cesium carbonate (1 equiv), solvent diformazan
1.5 mL, 4- fluorine phenylhydrazine of base sulfoxide, 0.55 mmol, 1.0 mmol of hexichol oxygen phosphorus, stirring and controlling reaction temperature is 35 DEG C, in
After being reacted 8 hours under white light, the isolated final product of silica gel column chromatography.
Concrete outcome is as follows:
1H NMR ((CD3)2SO, 400 MHz) δ = 7.90 (ddt, J = 11.5, 6.6, 1.6 Hz, 4H), 7.62
– 7.37 (m, 8H), 7.11 – 6.84 (m, 4H);13C NMR ((CD3)2SO, 101 MHz) δ = 156.23 (d,
J = 233 Hz), 147.43, 133.66, 132.43 (d, J = 9.2 Hz), 132.09 (d, J = 2.9 Hz),
128.87 (d, J = 12.3 Hz), 115.27 (d, J = 22.0 Hz), 114.56 (d, J = 7.4 Hz)。
Embodiment 5
The preparation method of diaryl phosphin hydrazide kind compound, steps are as follows:
Aryl hydrazine is 4- bromophenyl-hydrazine, photosensitizer Bengal rose red (10 mol%) is added in 25 mL reaction tubes, triethylene two
Amine (1 equiv), 1.5 mL, 4- bromophenyl-hydrazine of solvent acetonitrile 0.55 mmol, 0.8 mmol of diphenyl phosphate oxygen are stirred in air
Controlling reaction temperature is 45 DEG C, after reacting 5 hours under white light, the isolated final product of silica gel column chromatography.
Concrete outcome is as follows:
1H NMR ((CD3)2SO, 400 MHz) δ = 7.96 – 7.82 (m, 4H), 7.71 (d, J = 3.4 Hz,
1H), 7.62 – 7.46 (m, 7H), 7.28 (d, J = 8.8 Hz, 2H), 6.98 (d, J = 8.9 Hz, 2H)
;13C NMR ((CD3)2SO, 101 MHz) δ = 150.25 (d, J = 5.1 Hz), 133.47, 132.43 (d, J
= 9.0 Hz), 132.18 (d, J = 3.3 Hz), 131.46, 128.90 (d, J = 12.0 Hz), 115.36,
109.57。
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.