Cannabigerol Purification Without Chromatography

The patent converts the harmful polyalkylation side reaction into a beneficial selective purification mechanism. By allowing polyalkylation to occur with excess allylic compound, the unwanted polyalkylated regioisomers are formed in high concentration, which then enables their selective removal through crystallization of the desired cannabigerol product, achieving high purity without complex chromatography

The patent changes the reaction parameters by using excess allylic compound (1.5-3 equivalents) and controlling temperature (0-50°C), which shifts the reaction outcome from a mixture of products to a regime where the desired monoalkylation product can be selectively isolated through subsequent crystallization, improving both yield and purity

The patent replaces the mechanical/chromatographic purification system with a simple crystallization process. By controlling the reaction conditions and using excess allylic compound, the desired cannabigerol crystallizes selectively from the reaction mixture, eliminating the need for time-consuming and expensive chromatographic columns and resins

The patent eliminates the need for expensive, complex chromatographic equipment by using a simple, inexpensive crystallization process that can be performed in standard laboratory glassware. The purification is achieved through a disposable crystallization step rather than requiring costly chromatographic materials