The method of producing a linear C4 C19 aldehyde comprising reacting an anhydrous mixture comprising a C3 C18 olefin, CO and hydrogen in the presence of {TAIL ~ a catalyst} at from about 100° to about 200° C. at {HEAD ~ a pressure} of from about 500 psi to about 2500 psi and from between 0.5 to about 10 hours wherein said catalyst has the following general formula: 
The method of producing a linear C4 C19 aldehyde comprising reacting an anhydrous mixture comprising a C3 C18 olefin , CO and hydrogen in the presence of { TAIL ~ a catalyst } at from about 100 ° to about 200 ° C. at { HEAD ~ a pressure } of from about 500 psi to about 2500 psi and from between 0.5 to about 10 hours wherein said catalyst has the following general formula :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH