The part of a sentence 'necessity to achieving' is correct and usable in written English.
You can use it to state that something is essential for achieving a certain goal. For example, "Hard work is a necessity to achieving success."
What makes this new investment notably innovative is not its mission to create green infrastructure but its approach to public-private partnerships as a necessity to achieve it.
If I had missed it I would have been mixing concrete.' The necessity to achieve the cut to earn the money for the next tournament had a detrimental effect on his game.
A simultaneous acquirement of these tasks is a necessity to achieve an overall optimal design.
The large Democratic majorities in Congress today are arguably Obama's curse, for they have relieved him of the necessity to achieve a bipartisan basis for his agenda.
It is of great necessity to achieve a proton exchange membrane (PEM) with high proton conductivity and low methanol permeability for the practical applications.
With the rapid advancement in very large scale integration (VLSI) technology, it is the utmost necessity to achieve a reliable design with low power consumption.
Agrochemicals are abundantly used in annual crop production systems and are considered a necessity to achieve desired crop yields.
Therefore, the necessity to achieve higher cardiac transduction efficiencies by using minimally invasive techniques required the development of adjuvants that enhanced vector uptake into the myocardium.
Development of such a concerted international approach is a necessity to achieve the same magnitude of gains for rare childhood tumors, as has been seen for their more frequently occurring counterparts.
In this sense, improving the tolerance of the biocatalyst becomes a primary necessity to achieve a process with high product titers (Alper et al. 2006; Gonzalez et al. 2003; Jarboe et al. 2010; Miller and Ingram 2007; Yomano et al. 1998).
