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Purity:99%
Substituted 4H-chromene derivatives are ...
A facile, one-pot three-component protoc...
4ff-Chromenes and dihydropyrano[3, 2-c]c...
Substituted 4H-chromenes were easily pre...
ethyl 2-cyanoacetate
5-chlorosalicyclaldehyde
SC79
Conditions | Yield |
---|---|
potassium-exchanged zirconium hydrogen phosphate;
at 40 ℃;
for 4h;
|
94% |
With
N,N,N’,N’-tetrabromobenzene-1,3-disulfonamide;
In
ethanol; water;
at 20 ℃;
for 4.5h;
|
92% |
With
water extract of soft ash obtained from rind of dry Aegle marmelos (bael) fruits;
In
ethanol; water;
at 20 ℃;
for 0.25h;
Green chemistry;
|
91% |
With
3 A molecular sieve;
In
ethanol;
at 20 ℃;
for 14h;
|
70.7% |
ethyl 2-cyanoacetate
5-chlorosalicyclaldehyde
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