Pyran, 2,3-dichlorotetrahydro

Pyran, 3-chlorotetrahydro-2-methyl-, 55, 63 Pyran, 3-chlorotetrahydro-2-methyl-, tis, trans mixture, 55, 64 Pyran, 2,3-dichlorotetrahydro-, 55, 63 2//-Pyran, 3,4-dihydro-, 55, 63,56, 51 2//-PYRAN-2-ONE, 56,49 2//-Pyran-2-one, 5-bromo-5,6-dihydro-,... 

Cyclic halo ethers also undergo reaction with Grignard reagents. 3-Chloro-tetrahydro-2-propylpyran is formed in 73% yield from 2,3-dichlorotetrahydro-pyran and propylmagnesium bromide.345 In a reaction analogous to the Boord synthesis, compounds of this structure are readily cleaved by sodium to the unsaturated alkanols 345,346... 

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