The conversion of tetramethylene rings in the trimethylene ring.

[1] KISHNER N, J RUSS PHYS CHEM, V37, P304

[2] KISHNER N, 1905, CHEM ZENTRALBL, P1703

[3] PERKIN, 1894, J CHEM SOC, V65, P950

[4] 1907, BER DTSCH CHEM GES, V40, P4396

[5] 1907, BER DTSCH CHEM GES, V40, P4398

[6] 1907, J RUSS PHYS CHEM GES, V39, P1901

[1] KISHNER N, J RUSS PHYS CHEM, V37, P304

[2] KISHNER N, 1905, CHEM ZENTRALBL, P1703

[3] PERKIN, 1894, J CHEM SOC, V65, P950

[4] 1907, BER DTSCH CHEM GES, V40, P4396

[5] 1907, BER DTSCH CHEM GES, V40, P4398

[6] 1907, J RUSS PHYS CHEM GES, V39, P1901