To pick the synthesis of uranium, there are several methods available.
Here are some examples of the synthesis of uranium from the search 
results:
Yan Liu, Rong He, Wenkun Zhu, and co-workers construct a pulse voltammetry method to directly prepare uranium (U) from radioactive wastewater

Uranium nitride complexes containing U(VI) can be synthesized and studied for their reactivity and bonding

Uranium-oxide nanocrystals can be synthesized by thermal decomposition of uranyl acetylacetonate (UAA) in a mixture solution of oleic acid

Uranium substituted zirconolite samples based on CaZrTi2O7 can be synthesized by a conventional solid-state method in air

Uranium complexes bearing a pendant borate or a pendant borane moiety can be synthesized

Hematite nanoparticles with U(VI) can be synthesized through a coprecipitation and hydrothermal treatment process

It is important to note that the choice of synthesis method depends on the specific application and desired properties of the uranium product.

The synthesis of uranium, specifically the production of uranium-235 (U-235),
typically involves several stages. Here is a simplified overview of the process:
          Mining and Extraction:
                                Uranium is typically obtained through mining operations,
                                primarily from uranium ore deposits in the Earth's crust.
                                The ore is extracted and processed to obtain uranium oxide (U3O8), also known as yellowcake.

           Conversion:
                      Yellowcake is then converted into a more suitable form for further processing,
                       such as uranium hexafluoride (UF6), which is a compound commonly used in subsequent enrichment processes.

            Enrichment:
                       Uranium enrichment involves increasing the concentration of U-235 in relation to the more abundant isotope,
                       uranium-238 (U-238). There are different methods of enrichment, including gas centrifuge technology and gaseous diffusion.
                       These processes exploit the slight difference in mass between U-235 and U-238 to separate them.

            Fuel Fabrication:
                            The enriched uranium, typically in the form of UF6, is converted into a more stable and usable form,
                            such as uranium dioxide (UO2) or uranium metal.
                            These forms can be shaped into pellets that are used as fuel in nuclear reactors.

It's important to note that the synthesis of uranium, particularly the enrichment process, is closely regulated due
to the potential for misuse in the production of nuclear weapons.
The production and handling of enriched uranium are subject to strict international safeguards and non-proliferation measures.
Additionally, the process described above pertains to the production of enriched uranium for nuclear energy purposes.
The synthesis of uranium for other applications, such as scientific research or medical uses, may involve different processes and requirements.