Number | Name | Date | Kind |
---|---|---|---|
2064564 | Quattlebaum, Jr. | Dec 1936 | |
2309727 | Barnes | Feb 1943 | |
2462031 | Wittcoff | Feb 1949 | |
3322832 | Cragoe | May 1967 | |
3928457 | Ember | Dec 1975 | |
4010204 | Koster et al. | Mar 1977 | |
4035395 | Stetter et al. | Jul 1977 | |
4146581 | Nissen et al. | Mar 1979 | |
4355184 | Kaku et al. | Oct 1982 |
Number | Date | Country |
---|---|---|
506850 | Jun 1939 | GBX |
Entry |
---|
Hays et al, "Condensation of Formaldehyde with Compounds Containing Activated Hydrogens", J. Am. Chem. Soc., vol. 73, pp. 5369-5373 (Nov. 1951). |