what reagents will give the following productSolutionfor car

what reagents will give the following product?

Solution

for carboxiylic acid to aldehyde

i)H2,Pd(palladium )

ii)PCC

for alchohol to aldehyde

partial oxidation via potassium dichromate

from aldehyde to that ethene

=via (EtO)2POCH2R in presence of NaH and THF