Wadsworth-Emmons Reagents

We now offer a broad range of Wadsworth-Emmons Reagents. The Wadsworth-Emmons reaction is a modified Wittig reaction that uses phosphonate-stabilized carbanions with aldehydes or ketones to produce predominantly E-isomer alkenes. Our popular products such as Dibutyl butylphosphonate and Diethyl 3-butenylphosphonate are typically available for immediate shipment. View detailed information on all our available Wadsworth-Emmons Reagents by linking to the specific product blocks.

PRODUCT NAME/Application CAS Catalog # QUANTITY Price Citations RATING
Triethyl 4-phosphonocrotonate, mixture of isomers
Used for mGlu4R agonist preparation
10236-14-3 sc-224322
10 g
$90.00
0
Allyl P,P-diethylphosphonoacetate
113187-28-3 sc-227228
5 ml
$82.00
0
Diethyl (2-cyanoethyl)phosphonate
10123-62-3 sc-227823
1 g
$24.00
0
Diethyl (2-oxobutyl)phosphonate
1067-73-8 sc-227824
1 ml
$27.00
0
Diethyl (alpha-aminobenzyl)phosphonate hydrochloride
16656-50-1 sc-227827
1 g
$24.00
0
Diethyl 1-phenylethyl phosphonate
33973-48-7 sc-227828
10 g
$94.00
0
Diethyl 3-butenylphosphonate
A reactant for synthesis
15916-48-0 sc-227831
1 g
$35.00
0
Diethyl 4-methoxybenzylphosphonate
1145-93-3 sc-227834
25 g
$134.00
0
Diethyl allylphosphonate
1067-87-4 sc-227837
5 g
$79.00
0
Diethyl benzylphosphonate
1080-32-6 sc-227839
25 g
$66.00
0
Triethyl 2-phosphonobutyrate
17145-91-4 sc-229568
5 ml
$35.00
0
Bis(2-chloroethyl) methylphosphonate
2799-58-8 sc-234029
1 g
$22.00
0
Bis(2,2,2-trifluoroethyl) methylphosphonate
757-95-9 sc-234033
5 g
$56.00
0
Diethyl (1-cyanoethyl)phosphonate
29668-61-9 sc-234627
5 g
$221.00
0
Diethyl (2-methylallyl)phosphonate
51533-70-1 sc-234628
1 g
$31.00
0
Diethyl (2-oxo-2-phenylethyl)phosphonate
A versatile Wadsworth-Emmons Reagent
3453-00-7 sc-234629
1 g
$34.00
0
Diethyl (2-oxopropyl)phosphonate
1067-71-6 sc-234630
sc-234630A
5 g
25 g
$100.00
$431.00
0
Diethyl (bromodifluoromethyl)phosphonate
65094-22-6 sc-234631
5 g
$75.00
0
Diethyl (ethylthiomethyl)phosphonate
54091-78-0 sc-234632
5 g
$111.00
0
Diethyl (hydroxymethyl)phosphonate
3084-40-0 sc-234633
25 ml
$193.00
0
Diethyl 2-butenylphosphonate, predominantly trans
682-34-8 sc-234642
5 g
$98.00
0
Diethyl 2-phenylethyl phosphonate
A Wadsworth-Emmons reagent
54553-21-8 sc-234644
10 g
$75.00
0
Diethyl 4-aminobenzylphosphonate
20074-79-7 sc-234648
5 g
$120.00
0
Diethyl 4-chlorobenzylphosphonate
39225-17-7 sc-234649
10 g
$58.00
0
Diethyl trans-cinnamylphosphonate
52378-69-5 sc-234674
5 g
$38.00
0
Diethyl-4-methylbenzylphosphonate
3762-25-2 sc-234675
10 g
$48.00
0
Diisopropyl (ethoxycarbonylmethyl)phosphonate
24074-26-8 sc-234701
5 g
$69.00
0
Dimethyl 3-(3-chlorophenoxy)-2-oxopropylphosphonate
40665-94-9 sc-234724
50 g
$95.00
0
Triethyl 2-chloro-2-phosphonoacetate
7071-12-7 sc-237296
5 ml
$110.00
0
Triethyl 3-phosphonopropionate
3699-67-0 sc-237298
25 ml
$111.00
0
Diethyl chloromethylphosphonate
3167-63-3 sc-239726
1 ml
$91.00
0
Diethyl cyanomethylphosphonate
2537-48-6 sc-239729
10 g
$62.00
0
Diethyl isocyanomethylphosphonate
41003-94-5 sc-239733
1 ml
$130.00
0
Methyl diethylphosphonoacetate
1067-74-9 sc-250370
10 g
$60.00
0
Trimethyl phosphonoacetate
5927-18-4 sc-251354
25 g
$41.00
0
Dibutyl butylphosphonate
78-46-6 sc-252685
5 ml
$46.00
0
Diethyl (N-methoxy-N-methylcarbamoylmethyl)phosphonate
124931-12-0 sc-252704
5 g
$207.00
0
Diethyl (phthalimidomethyl)phosphonate
33512-26-4 sc-252705
25 g
$180.00
0
Diethyl 2-bromoethylphosphonate
5324-30-1 sc-252708
5 g
$41.00
0
Diethyl methylphosphonate
683-08-9 sc-252711
5 g
$50.00
0
Diethylphosphonoacetic acid
A nucleophile for nucleophilic addition reactions
3095-95-2 sc-252717
5 ml
$25.00
0
Dimethyl 2-oxopropylphosphonate
4202-14-6 sc-252730
sc-252730A
5 g
25 g
$86.00
$288.00
0
Dimethyl trimethylsilylmethylphosphonate
13433-42-6 sc-252735
1 ml
$200.00
0
Ethyl dimethylphosphonoacetate
311-46-6 sc-252801
10 ml
$72.00
0
Tetraethyl methylenediphosphonate
1660-94-2 sc-253663
5 ml
$86.00
0
Triethyl 2-fluoro-2-phosphonoacetate
2356-16-3 sc-253747
1 g
$47.00
0
Trimethylsilyl P,P-diethylphosphonoacetate
A chemical used in the synthesis of cytovaricin
66130-90-3 sc-253769
5 ml
$157.00
0
Diethyl (methylthiomethyl)phosphonate
A reactant used in the preparation of fused heterocycles
28460-01-7 sc-255089
25 g
$200.00
0
Diethyl cyclopropylmethyl phosphonate
863975-37-5 sc-255095
1 g
$67.00
0
Dimethyl 2-oxoheptylphosphonate
An intermediate in the synthesis of eicosanoids
36969-89-8 sc-255103
1 g
$36.00
0
Potassium P,P-dimethylphosphonoacetate
34170-88-2 sc-255447
5 g
$48.00
0
(tert-Butoxycarbonylmethylene)triphenylphosphorane
A chemical used in the synthesis of aldose reductase inhibitors, a podophyllotoxin derivative, and tautomycin.
35000-38-5 sc-255633
sc-255633A
5 g
25 g
$106.00
$225.00
0
tert-Butyl diethylphosphonoacetate
An important precursor to HDAC inhibitors
27784-76-5 sc-255636
5 g
$120.00
0
Triethyl 2-phosphonopropionate
3699-66-9 sc-255697
10 g
$40.00
0
(Carbethoxyethylidene)triphenylphosphorane
5717-37-3 sc-257216
5 g
$46.00
0
Methyl P,P-bis(2,2,2-trifluoroethyl)phosphonoacetate
88738-78-7 sc-257787
5 g
$174.00
0
tert-Butyl P,P-dimethylphosphonoacetate
A Horner-Wittig reagent giving preferentially (E)-α,β-unsat. esters which are mildly saponified with acid
62327-21-3 sc-258209
25 ml
$242.00
0
Triethyl phosphonoacetate-1-13C
61203-67-6 sc-258289
250 mg
$120.00
0
Triethyl phosphonoacetate-13C2
A labeled Homer-Wadsworth-Emmons reagent
100940-60-1 sc-258290
1 g
$494.00
0
Diisopropyl (cyanomethyl)phosphonate
CAS: 21658-95-7, MF: C8H16NO3P, MW: 205.19
21658-95-7 sc-280676
5 g
$152.00
0
Diethyl fluoro(phenylsulfonyl)methylphosphonate
sc-300447
1 g
$29.00
0

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